Universal Serial Bus

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universal serial bus

[‚yü·nə‚vər·səl ‚sir·ē·əl ′bəs]
(computer science)
A serial interface that can transfer data at up to 480 million bits per second and connect up to 127 daisy-chained peripheral devices. Abbreviated USB.

Universal Serial Bus

(hardware, standard)
(USB) An external peripheral interface standard for communication between a computer and external peripherals over an inexpensive cable using biserial transmission.

USB is intended to replace existing serial ports, parallel ports, keyboard, and monitor connectors and be used with keyboards, mice, monitors, printers, and possibly some low-speed scanners and removable hard drives. For faster devices existing IDE, SCSI, or emerging FC-AL or FireWire interfaces can be used.

USB works at 12 Mbps with specific consideration for low cost peripherals. It supports up to 127 devices and both isochronous and asynchronous data transfers. Cables can be up to five metres long and it includes built-in power distribution for low power devices. It supports daisy chaining through a tiered star multidrop topology. A USB cable has a rectangular "Type A" plug at the computer end and a square "Type B" plug at the peripheral end.

Before March 1996 Intel started to integrate the necessary logic into PC chip sets and encourage other manufacturers to do likewise. It was widely available by 1997. Later versions of Windows 95 included support for it. It was standard on Macintosh computers in 1999.

The USB 2.0 specification was released in 2000 to allow USB to compete with Firewire etc. USB 2.0 is backward compatible with USB 1.1 but works at 480 Mbps.

usb.org.
References in periodicals archive ?
o USB-C dock is fully USB-IF certified to meet top industry standards for USB 3.1 Gen 1, USB Type-C and Power Delivery, and VESA DisplayPort and DisplayLink certified to ensure optimal video connections
USB Type-C is a hardware change, rather than an interface standard change (like USB 2.0 to USB 3.0).
The USB 3.0 specification was released in November 2008, with subsequent 3.1 and 3.2 specifications published in December 2014 and September 2017, respectively.
has introduced the Alldaq ADQ-USB 3.0-ISO series of USB 3.0 isolators, which support the full USB 3.0 SuperSpeed data rate of 5Gbit/s.
The SanDisk 32GB pen drive features USB 3.0 connectivity, which can transfer the data at the rate of 130MB/s.
USB is an abbreviation for universal serial bus, and the current USB standard, adopted in September 2017, is USB 3.2 technology.
Connect an HDMI display for 4K AV, read/write to onboard SD/MicroSD slots, attach devices to three USB 3.0 ports, with one BC 1.2 charging port, and transfer files at data rates to 5 Gbps; and join a wired network via the Gigabit Ethernet port.
That means a USB Type-C connector can either be USB 2.0 capable of 480Mbps, USB 3.
The CCG4 controller also controls the Raven Ridge processors built-in USB-DisplayPort mux over I2C, controlling the switching of the USB 3.1 Generation 2 signals and DisplayPort signals on the USB-C port.
Whereas, the high bandwidth data or performance interface includes USB 3.0, USB 3.1, USB 3.2 and Thunderbolt Alt-Mode.
Microsoft's patent says that the connector would only be able to support USB 2.0 speeds, which is only up to 60MBps. This could render the USB-C port a bit useless since most Type-C connectors are using USB 3.0 (5gbps) and USB 3.1 (10gbps) speeds.
This G-DRIVE device features the USB 3.1 Gen 1 interface with USB-C connector, which enables high-speed performance with Mac and Windows[R] PCs of today and tomorrow and also ships with a USB-C to USB-A cable for compatibility with traditional systems with a USB-A connector.