What is usb

What does USB stand for and what is it? The dust cover is not suitable for everyone, because it is hingeless and completely removable. But it's made of good quality Plexiglas and it's sturdy, and the stand it stands on (while playing records) can be used to display the record case.

What are some disadvantages of using USB?

• Some USB flash drives have encryption weaknesses or gaps that may pose a security risk due to data disclosure. • Its size and lightness can also sometimes be a disadvantage.

What are the uses of USB?

USB (Universal Serial Bus) is the most commonly used connection to connect a computer to peripherals such as digital cameras, printers, scanners and external hard drives. USB is a cross-platform technology that is supported by most major operating systems. On Windows, it can be used with Windows 98 and later versions.

How do I Find my USB drive on my computer?

Select location Select the USB drive you want to recover by specifying the location.
Scan Storage Click the "Start" button to start scanning the media.
Preview and Restore

What does USB stand for and explain what it is?

USB (white USBA and USBB - very rare) → Mbps
USB (White USBA and USBB, MiniUSB) → 12 Mbps
USB (Black USBA and USBB, MiniUSB, MicroUSB) → 480 Mbps
USB (Blue USBA and USBB, MicroUSB B) → 5Gbps
USB+ (green USBA and USBB, USB Type C) → 10 Gbps
USB (USB Type-C) → 20 Gbps

What do the letters USB stand for?

Is individuality the product it claims to be?

What are the uses for the USB?

While people connect their devices via Bluetooth, some still have to use an aux cable in the car.

What is the difference between USB Type-A and USB Type-B?

The main difference is that USB Type A is generally used to connect to other USB devices as a host, while USB Type B is generally used to control peripherals. As an example, explain how your office computer connects to a printer.

What are the disadvantages of usb drive

• Portability can also be a drawback of USB flash drives. Their small size makes them easy to lose and steal, raising concerns about their reliability and security as backup media for important and sensitive data.

What happens if you accidentally damage a USB drive?

As with all moving parts, wear and tear can damage or break the USB connector. And since the flash drive is poorly protected, there is also a risk that the relatively soft metal of the USB connector will bend and render the device useless. Over time, the files on the flash drive can become corrupted and unreadable.

What are the advantages of USB drives?

In addition, USB flash drives are faster, more durable, more reliable and come in different capacities. The simplest advantage of a USB flash drive is the great convenience it offers when it comes to data storage. USB has made it easier and faster to transport and transfer files and information from one computer to another.

What are the dangers of USB plugs?

As with all moving parts, wear and tear can damage or break the USB connector. And since the flash drive is poorly protected, there is also a risk that the relatively soft metal of the USB connector will bend and render the device useless.

What are the disadvantages of usb charging

These are the disadvantages of the USB interface: ➨Supported speed is higher, but lower in the latest USB versions V3 and V4 compared to Gigabit Ethernet and Firewire interfaces. ➨USB supports point-to-point communication.

What are the advantages of USB Type-C cables?

This advantage also means that 3. Wide use and application The system cable with USB Type-C connector can supply up to 100W of power to power and charge larger devices such as laptops. Devices like the 12-inch MacBook and Retina MacBook Pro use a USB-C connector for power, charging, and data transfer.

Are USB drives more vulnerable to mechanical damages?

While flash drives are less prone to mechanical damage, they are not completely free. USB drives contain a retractable USB connector that can fray or even bend. In this case, the drive becomes completely unusable.

What are the advantages of USB USB flash drives?

USB also offers additional benefits such as: 1 No or negligible power consumption 2 No breakable moving parts 3 No data loss due to dust, magnetic fields or impact, scratches, etc. 4 Denser storage than other removable media such as CDs or DVDs.

Why to use a flash drive?

Promotional Items - These are great for marketing and branding and can be personalized to make memorable gifts.
A data warehouse is a place where data can be stored securely and retrieved from almost anywhere.
resume. A USB resume is a smart form of technology that allows a candidate to stand out from the crowd.

How to repair a corrupted USB flash drive?

Run Recoverit Data Recovery, select a drive recognized by the program and then.
The USB flash drive recovery software will start scanning the device to find the lost data, which will take a few minutes.
In the end, you can check all recovered files. Preview files such as photos, videos, music, audio, and office documents.

What is the most reliable USB flash drive?

The best flash player.
Compact and secure USB stick.
Unbeatable offer for USB sticks.
Lots of storage space for little money.
Premium finishes and massive storage space go hand in hand with high speeds.
Really solid construction.
Ideal for USBC connections.

What is the most secure flash drive?

SanDisk Extreme. Read/write speed: 190 MB/s
Kanguru Solutions Defender Elite. Read/write speed: 20Mbps
LaCie XtremKey USB drive.
IronKey W500 workstation.
Kingston DataTraveller Vault data protection.
ADATA Dash Drive Elite UE700.
Apricom Aegis secure key.
Verbatim Store 'n Go V3.
Imation Defender F200.
Transcend Jet Flash 780.

What are the advantages of USB?

➨The USB connector is very simple, so it is available in computing devices such as desktops, laptops, etc. USB hubs are available to increase the number of ports (if needed). ➨Installing a USB device is very simple and only requires an operating system (OS). ➨USB connectors are very small compared to RS232 and other parallel interfaces.

Can I charge my phone with an external hard drive?

Then Blu Ray and external hard drive on USB 3 ports, then everything else on a USB hub. EDIT: You can charge phones through a USB hub, but charging may be slower.

What are the advantages of USB-C?

The more compact physical size of USB-C means that using its connectors further reduces the physical size of portable devices, especially netbooks and ultra-thin laptops. This advantage also means that: .

What are the disadvantages of usb port

The simplest advantage of a USB flash drive is the great convenience it offers when it comes to data storage. USB has made it easier and faster to transport and transfer files and information from one computer to another.

What are the disadvantages of Universal Serial Bus (USB)?

Some major drawbacks of Universal Serial Bus (USB) are given below. It has limited capacity and general performance. The Universal Serial Bus does not provide a broadcast function, only individual messages can be exchanged between the host and the device. The data transfer is not as fast as in other systems.

What are the limitations of USB?

In addition to its many advantages, there are some limitations that make USB inefficient for certain tasks. • Speed: With the introduction of USB, 5 Gbps can be achieved. But it is still inferior to Gigabit Ethernet. FireWire 800 (IEEE1394b) is also a competitor to USB.

What are the pros and cons of USB Type-C?

However, the benefits of USB TypeC revolve around the standardization of the physical form, pin layout, and pinout of connectors and ports. On the other hand, its drawbacks are that it is not really versatile due to its wide range of uses.

What are the advantages and disadvantages of USB flash drive?

Advantages and Disadvantages of USB Flash Drives Advantages: Compared to hard drives, USB flash drives consume little power, have no vulnerable moving parts and are usually small in size and weight. Data stored on USB sticks is impervious to mechanical shock, magnetic fields, scratches and dust.

Is your USB flash drive a security risk?

Adrian KingsleyHughes reports that the security company Syss has discovered a vulnerability in the encryption of most USB drives. This vulnerability exposes all of your data regardless of previously configured authentication tools.

What are cons of an USB?

USB microphones are powered by the computer, so phantom power is not required. This reduces the amount of gear you need while shooting. All you need is a microphone, a stand, a cable and a computer. Discomfort. dubious economy. A cheap USB microphone is guaranteed to give bad results.

Which USB storage device do you want to use?

Connect your external hard drive to one of the available USB ports on the PS4. Go to the menu on PS4. Select and then . Select the USB drive from the list and press X in the next screen. Select , then Select , then and finally .

Is it safe using an USB cable for charging?

Separate charging port. The dedicated charging port is for power sources, such as wall chargers, not listed, so charging is done without digital communication.
bottom gate.
Default down link.

What is the best USB cable?

“I wanted to make it easy to connect to USBC and HDMI ports for game consoles and the like. With LG, I can connect with a cable, easily connect game consoles, etc.

What's the best brand of USB cables?

Anchor power cord.
Belkin MIXIT ChargeSync cable.
JSAUX Micro USB dual pack.
NetDot Magnetic Charging Cable (Three Pieces) NetDot offers an affordable magnetic charging kit - the three-in-one combo includes both USBC and Micro-USB options, making it ideal when
Syncwire charging cable.
Chicken Titan fuse wire.
Proxy transmission cable.

Can any USB cable be used for charging?

The Type C cable can be used with a normal USB charger, but normal chargers will deliver a maximum of 2 amps. The TypeC cable can supply power from 3 to 5 amps. If the USB charger cannot provide this power, fast charging will not work properly and the mobile phone will take longer to charge. If you can.

What are the uses of usb flash drive

Advantages of USB storage. Using a USB memory will help you a lot in every way. This USB stick is useful for instant and secure data transfers and backups. It can also help you get your work done faster and better. This device contains flash memory.

What to do with your USB flash drive?

Install Parted Magic on a USB stick. Download the Parted Magic ISO and the UNetbootin utility.
Cast Separated Magic. Make sure your computer's BIOS is set to boot from USB devices, then connect the USB drive to the USB port.
Applications. GParted (Gnome Partition Editor) is a graphical partition editor that can restructure disks.

What is the purpose of an USB flash drive?

They can be used to start a non-booting system and for troubleshooting and repair.
They can be used to bypass certain types of security measures on many systems.
They can be used to install an operating system on a computer.

What size USB flash drive should I buy?

USB storage capacity ranges from less than 1 GB to more than 1 TB. There is no correct flash drive size, the required storage capacity depends on the amount of data you want to store. For example, if you want to recover some Word or Excel files from your computer, a 1GB flash drive might give you more than enough capacity.

Uses of usb devices

The USB port is a standard wired interface for personal computers and consumer electronics. USB stands for Universal Serial Bus, the industry standard for digital data transfer over short distances. USB ports allow you to connect USB devices and transfer digital data via USB cables.

How to use your USB?

Connect the first end of the USBC to USBC cable to the graphics card. Now take the second end and connect it to the monitor. Turn on your system and monitor, and that's it.

Which USB port should I use?

The USB stick must be connected to the SuperSpeed USB port. It is recommended to connect the optional PS5 storage to the USB TypeC port on the front of the PS5 console. The USB TypeA ports on the back of the PS5 console can also support extended storage. The USB flash drive is not compatible with the USB TypeA port on the front of the PS5 console.

How can I access my USB drive?

You can access a USB hard drive connected to the router's USB port over the Internet when you are not at home. To access a USB drive from a remote computer: Launch a web browser from a computer that is not on your home network. Connect to your home router. Enter the DNS name to connect via dynamic DNS. To use a Dynamic DNS account, you must enter the account information on the router's Dynamic DNS screen.

How do I open USB drive on Windows 10?

Right click on "Start" and type "Computer Manager". Open the Computer Management menu.
Click "Disk Management" and locate the device in the disk browser.
Right click on "USB Hard Drive" and select "Format" to format the USB drive.

Where do I Find my USB drive?

Plug the USB stick into your system's USB port. Go to My Computer > Removable Disk Icon. Right click on the removable disk icon and open its properties. Click the Tools tab. Click the "Create New" button.

Can not access USB drive Windows 10?

Try the flash drive on another PC/laptop. A faulty USB drive or damaged USB port on your PC/laptop can also cause problems opening the USB drive.
Try to recover files from a flash drive. If your USB drive becomes inaccessible or you can't access it, check if it shows up in Disk Management.
Reinstall the USB drivers.

How to find your external hard drive in Windows 10?

✔ Solution 1: Assign a drive letter to your external hard drive. If the external drive does not have a drive letter, it will not be visible in File Explorer.
✔ Solution 2: Initialize the external hard drive. Select "Initialize disk" and set the disk partition style to MBR or GPT.
Solution 3: Fix MBR without Data Loss

Why is 4GB RAM better than 2GB?

Intel Core i76700K ( )
Asrock Z170 Gaming K6+
Dual Channel: 16GB DDR42666 RAM
Dual Channel: 8GB DDR42666 RAM
One channel: 4 GB DDR42666 RAM
GeForce GTX 980
Review MX200 1TB
SilverStone Essential Gold 750W
Windows 10 Professional 64-bit

How much does 4GB flash drive cost?

USB Drive Converter 4GB15 $$ USB Drive Converter 32GB232 $$ USB Drive Converter 8GB370 $$ Electronics Computers & Accessories Data Storage USB Drives Currently out of stock.

Is 4GB of RAM worth it?

Yes, I'd definitely say yes, this is a good place for basic Windows 10 tasks and programs, and just about the bare minimum for many modern games and other more resource-hungry apps. If you have 4 GB, it's worth upgrading if you don't already have a 32-bit OS.

What to do with a 4GB flash drive?

Windows installation media. This can be an .ISO file or an installation DVD.
USB stick with at least 5 GB free space. This drive will be formatted, so make sure there are no important files on it.
Technician PC The Windows PC you will use to format the USB drive
Destination PC PC where you will install Windows

How do you open a flash drive on a Mac?

Connecting a flash drive to a MAC. This is the first step the user takes.
Format your flash drive on Mac Press CMD + space then type application to access the Applications folder.
Virus check on a flash drive on a Mac.
Open the flash drive on the Mac.
Transfer files from Mac to flash drive.
Backup your USB drive on Mac.

How do I boot from USB on a Mac?

Plug the bootable USB into an available USB port.
Press the power button to turn on your Mac (or restart your Mac if it's already on).
When you hear the startup beep, hold down the Option key.
Use the pointer or arrow keys on your keyboard to select the USB drive you want to boot from.

How to fix USB drive not recognized on Mac?

Scan USB and USB ports. Please check your USB device carefully.
Restart your Mac or use a different Mac system. Often the flash drive does not recognize the Mac due to electrical connection issues.
Check your Finder preferences. Open the menu bar on your Mac and go to Finder.
Use Disk Utilities to repair USB drives.
Reformat the USB stick.

How to make your Mac boot from USB drive?

First, prepare a USB drive. If you want to create a bootable USB drive on your Mac, the first thing you need to do is make sure you have permission to do so.
Create a bootable flash drive with Etcher.
Create a bootable USB drive using Terminal.
Boot the USB drive.
The best way to experience Linux on your Mac.

How to properly use your USB flash drive?

The first step is to connect the USB drive to the computer you are using.
After successfully inserting the flash drive into the USB port, you need to wait for the system to read the external hardware device.
Once your computer recognizes the USB drive, a storage device icon will appear on the My Computer tab.

How do I start computer from USB drive?

¶ Introduction. Once you have created or obtained an infinity USB drive, you can follow the instructions below to download it to your computer.
¶ Option 2: Set download priorities. If your computer does not have a boot device drop-down menu, change the boot device order to
¶ Also see

How do you access USB drive?

Prerequisites
Enable HyperV USB passthrough on the server side. Disable the USB drive on the offline host. Add a USB drive to the virtual machine. Remove the USB drive from the virtual machine.
Enable HyperV USB passthrough on client side (advanced session mode) Enable advanced session mode Access USB devices in advanced mode

How do I open flash drive on Windows 10?

Open configuration. Click on Devices. Click Autoplay. In the Select Default Autoplay Options section, select the Removable Disk drop-down menu and select the new default action when a USB drive is connected: Do nothing. Use the Memory card drop-down menu and choose a new default action when you connect a memory card: Import photos and videos (OneDrive).

How do I open the disk drive?

Open MSExplorer DVD, BluRay or CD Player in Windows 10! PS: There is also an easy solution for BluRay Eject!
Eject DVD, BluRay or CD via Windows 10 Disk Management!
BluRay, CD, DVD-ROM drive issues in Windows 10!

How to see all drives available on the computer?

Open configuration.
Click Systems.
Click Storage.
Under "Advanced Memory Options", select "Show memory usage by other drivers".

Which USB flash drive should I buy?

File transfer speed should be the first factor to consider.
The second choice is between generations and must be made carefully.
When choosing a drive, the user should consider the type of data, available storage space, and how these factors affect data transfer rates.

How to access USB drive on Amazon Fire TV?

Your Fire TV must be rooted. ClockworkMod Custom Recovery should be running on your Fire TV. Your USB drive should only have one partition formatted with the EXT4 file system. NTFS, FAT, FAT32, exFAT do not work. Optional but recommended: Do a factory reset before following this guide. Some have encountered problems if they didn't do a factory reset first.

How to get a free USB flash drive?

What is a flash drive?
General use: transport and storage of data
General Use: USB Control
Extensive Uses: Create USB Data Recovery Utility
Advanced Usage: Creating Operating System Installation Media
Prolonged Use: Bootable Antivirus Disk
Long-term use: firmware update
conclusion
Frequently asked questions about using a USB flash drive
User Comments

What is the best USB flash drive?

Six color options, three-in-one storage with lightning protection, USB Type-A and Micro USB Touch ID. The cheapest on the list.

What is usb flash drive

A flash drive, also known as a thumb drive, flash drive, or thumb drive, is a plug-and-play portable storage device that uses flash memory and is light enough to attach to a keychain. You can also use a USB stick instead of a CD.

What's inside an USB flash drive?

A USB flash drive has five components: Jack This is the metal outer part of the physical connection to your flash drive. Mass Storage Controller The microcontroller acts as an intermediary for data transfer between the host and the USB stick. NAND flash memory chip Your data is stored here.

What to look for in an USB flash drive?

Storage Space - Get more of what you need. The requirements depend on the files you want to save or transfer.
Physical size: smaller is better. It doesn't sound like much, but if you plan on wearing it on your keychain all the time
USB: take both.
Brand: Avoid cheap imitations.
Reading speed: the faster the better.

Why is RAM so important and what does it do?

Ultimately, RAM allows you to quickly and efficiently open multiple programs at the same time. RAM is significantly faster than a hard drive: 20 to 100 times faster, depending on the type of hardware and the task. Because of its speed, RAM is used for direct information processing.

What is RAM and why it matters on smartphones?

RAM is a type of super-fast memory that stores the apps you've opened since you turned on your phone.
Thanks to this memory, you can immediately return to the application you were using before and pick up where you left off.
Without RAM, apps would close when switching to another app, causing a delay when revisiting the previously used app.

What is RAM and its functions in a computer?

RAM types. There are two main types of RAM: Static Random Access Memory (SRAM) and Dynamic Random Access Memory (DRAM).
RAM usage. After the magnetic hard drive, RAM is the largest memory you can find in a computer's hardware.
RAM characteristics. The main function of RAM is to provide fast read and write access to the storage device.
bottom line.

Why is RAM so important?

short-term memory. RAM is similar to your computer's short-term memory.
Speed. RAM allows you to complete tasks quickly.
Minimum RAM requirements. If you want to buy a desktop computer, RAM is an important consideration.
specific task.
Other Considerations.

What is usb type-c

Thunderbolt is not the same as USB C. First, USB C is just a form of USB hardware interface, and Thunderbolt is an interface standard that combines PCI Express data transfer technology with DisplayPort display technology. Second, Thunderbolt has three versions and only Thunderbolt 3 uses a USB-C connector.

Which is better micro USB or Type C?

TypeC introduces a new way of connectors. USB TypeC has a new small physical connector, about the size of a micro USB connector.
USBC, USB PD and power adapter. The USB PD specification is also closely related to the USB TypeC specification.
USBC, USB and transfer speed. CONNECTIVITY: USB vs.
Backward compatibility.

What are the advantages of USB Type C?

Speed: Working with USBC gives you access to the latest version of the USB protocol.
Size: Unlike its predecessors Type B and Type C, the USBC is smaller in height and width.
Improved output power: With USBC, you get up to 100W of output power thanks to the power supply technology.

Is USB C same as micro USB?

USB TypeC is more flexible and faster than Micro USB. According to the research, TypeC connector can be used for power input or output while Micro USB can only be used for power input. The USB TypeC connector has a fast charging speed of 18W for phones and can charge laptops up to 100W.

How to identify USB ports on your computer?

Method 1: Check the connector color and logo
Method 2 – Check the USB Driver
Method 3. Check the number of pins
User Comments

How to enable or Disable USB ports in Windows 10?

Make changes to the registry
Reinstall the USB mass storage device driver
Enable ports in device manager
USB ports can be unlocked using third party software applications.
Enable the USB ports using the Disable USB Ports Group Policy.

How can I tell if my USB port is or

To disconnect the USB, you can look at the color of the connector. If you see that the connector port is blue, it identifies a 9-pin USB connector and the connector's white or black colors correspond to previous versions (USB).

How to activate USB ports on a monitor?

The above information may come in whole or in part from external websites or sources. refer to the information based on the sources you noted. This information may not apply to all products in the same category/series. ASUS provides the above information for informational purposes only.

What is usb 4

USB4 is the USB system specified in the version of the USB4 specification published by the USB Developers Forum on August 29, 2019. Unlike previous USB protocol standards, USB4 requires USBC ports and USB PD support for power delivery. Unlike USB, it allows DisplayPort and PCI Express tunneling.

Is USB 4 the same as Thunderbolt?

Thunderbolt 4 is based on the same underlying protocol as USB 4 - they are closely linked and all Thunderbolt 4 devices are USB 4 compatible. If someone has a USB 4 laptop, they can use a TBT4 device and vice versa. Basically, Thunderbolt 4 is USB 4 with all the bells and whistles.

When will USB 4 release?

USB4 is the USB system specified in the version of the USB4 specification published by the USB Developers Forum on August 29, 2019. Unlike previous USB protocol standards, USB4 requires USBC ports and USB PD support for power delivery. Unlike USB, it allows DisplayPort and PCI Express tunneling. The architecture defines a method for dynamically sharing a single high-speed channel with multiple terminal types that best supports data transmission for each type.

Which is better USB 2 or USB 3?

Theoretical speed improvements. USB is a standard and defines the maximum "signaling rate" for communication through a USB port.
Sights in the real world. Regardless of theory, let's take a look at how USB drives work in the real world.
Price. Price always plays an important role here.
Check the DriveSpecific tests.

What is the difference between Thunderbolt 3 and 4?

This is a hardware interface developed by Intel and Apple that allows you to connect any external device to your computer/laptop.
Replaces the Firewire interface.
There are three types of Thunderbolt interfaces viz.
Depending on these different versions, it supports different data rates and cable lengths.

What is the difference between USB and port?

The USB port has a black block inside.
The transfer rate of USB is 480 Mbps while USB can transfer data at 5 Gbps.
The communication via USB is unidirectional, which means that they can send or receive data at the same time.
USB can power connected devices with 500mA.

How to enable USB

In fact, by default you don't see anything when you run lsusb t. To enable the USB ports on Compute Module 4, you need to edit and add the boot configuration file (/) : Then reboot the Pi. Now you can use the integrated USB ports!

How to tell if USB is

To get started, you'll need to open the Device Manager, which can be found by right-clicking the My Computer icon and selecting Manage.
After that, you need to click on the plus sign in the Device Manager window, where you will see Universal Serial Bus controllers.
After that, you will get a list of all USB ports installed on the computer.
If you see a USB port name that contains a universal host, the version of the port
If the port name contains Enhanced Host and Universal Host, the version of your port is
If the USB port name is your port:

What can I do with the USB port?

Workspace configuration. The workstations are equipped with powerful hardware to handle demanding applications such as 3D rendering and 4K editing.
Improved limited workspace. A USB port hub can help you better manage your USB connections in a tight workspace.
transfer files.
Make mobile gaming easy.

What exactly can the USB port do?

You can charge your iPad. Standard USBC power supplies, as well as Apple's own adapters.
Connect your iPad to your computer.
Connection to screens, projectors, televisions.
Transfer data quickly.
Working with USB devices.
Download other stuff.
Love at first sight - no.

What is the disadvantage of USB ports?

Disadvantages of a USB flash drive • Some USB flash drives have encryption weaknesses or gaps that may pose a security risk due to data disclosure. • Its size and lightness can also sometimes be a disadvantage.

What does gui stand for

GUI stands for "Graphical User Interface" or "Graphical User Interface". Many identify the first GUI as the one shown by Doug Engelbart in his 1968 Mother of All demos, which include the mouse, remote text editing, links, and shortcuts. This is off topic, but what is a graphical user interface?

What are the advantages and disadvantages of GUI?

Advantages of the graphical user interface The advantages of the graphical user interface are that it is generally easier to use when the mouse and images are used to select commands and actions. Disadvantages of GUIs include that they are slower and take longer. Disadvantages of a graphical user interface A graphical user interface takes up much more disk space than other types of user interfaces.

What is the full meaning of GUI?

The full form of GUI is GUI. GUI is a user-friendly interface used to communicate with electronic devices. It shows all the content that the user has to present, be it a text file or an entity, images or videos.

What are the main features of a GUI?

Any graphical pointer
Set of icons symbolizing different things
Rectangular frames with text (called windows and dialog boxes)
Drop-down menus that act like street signs that lead to what you want to do.
Scroll bars that let you browse content (so you can see things that would otherwise be out of place)

What was the first GUI called?

by PARC researchers, including Alto, the first personal computer with a graphical user interface, laser printers and Ethernet, the ubiquitous technology of computer networking.. GUI operating system called Alto and finally introduced a commercial version called Xerox Star in 1981.

what is usb