USB

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USB

Universal Serial Bus: a standard for connection sockets on computers and other electronic equipment
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

USB

(computer science)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

USB

(architecture)

USB

(communications)
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

USB

(1) See USB drive and USB port.

(2) (Universal Serial Bus) USB is a hardware interface for up to 127 peripherals that is governed by the USB Implementers Forum (see USB-IF). USB is used to attach keyboards, mice, printers, external storage and mobile devices to the computer. It is also used for charging a wide variety of portable products (see USB power). After debuting in 1997, USB soon replaced the earlier serial port, parallel port and Apple Desktop Bus.

Hot Swappable Drives
USB devices can be plugged and unplugged while the computer is on. This feature, combined with easy-to-reach ports on every computer, gave rise to the ubiquitous USB drive for transport (a manual "eject" is however required). See USB drive, USB device class, USB OTG, USB switch and USB toy.


Connecting via USB
Host sockets are Type A, and peripherals use B, Micro-B, Mini-B, USB-C and Lightning. In time, USB-C is expected to replace A, as well as every other USB connector. Today, some laptops have only USB-C ports, while all other computers have Type A. See USB Type C, USB hub, Mini USB, Micro USB and Lightning connector.


Connecting via USB
Host sockets are Type A, and peripherals use B, Micro-B, Mini-B, USB-C and Lightning. In time, USB-C is expected to replace A, as well as every other USB connector. Today, some laptops have only USB-C ports, while all other computers have Type A. See USB Type C, USB hub, Mini USB, Micro USB and Lightning connector.







SuperSpeed Logos
As of USB 4, the nomenclature was simplified so that future SuperSpeed logos show their speed ratings (5, 10, 20, 40) and eventually replace the multiple designations for USB 3.x (see USB 3.2). DisplayPort requires USB-C cables (see USB Type C).




USB 2.0              Data Rate

 USB 2.0 High Speed    480 Mbps
 USB 2.0 Full Speed     12 Mbps
 USB 2.0 Slow Speed    1.5 Mbps


 USB 3.2              Data Rate  LanesSuperSpeedUSB 3.2 Gen 1x1         5 Gbps   1
 (a.k.a. USB 3.0)
 (a.k.a. USB 3.1 Gen 1)

 SuperSpeed+USB 3.2 Gen 2x1        10 Gbps   1
 (a.k.a. USB 3.1
 (a.k.a. USB 3.1 Gen 2)

 USB 3.2 Gen 1x2**      10 Gbps   2
 USB 3.2 Gen 2x2**      20 Gbps   2

 USB 4                  40 Gbps   2

 ** Dual-lane requires USB-C cables


USB Is Often Power Only
USB is widely used as a power source for phones, tablets and other devices. This Chromecast streaming stick plugs into the TV's HDMI port but is powered by USB (see Chromecast and USB power). (Image courtesy of Google Inc.)



USB Is Often Power Only
USB is widely used as a power source for phones, tablets and other devices. This Chromecast streaming stick plugs into the TV's HDMI port but is powered by USB (see Chromecast and USB power). (Image courtesy of Google Inc.)
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References in periodicals archive ?
Meanwhile, Kingston Technology will also highlight its newest line of fully encrypted USBs. The company will feature the DataTraveler 2000, which has been developed with an alphanumeric keypad that locks and unlocks the drive with number combination, for easy-to-use PIN protection.
The malware carries a multi-stage payload and is distributed to users through infected USB devices and spear-phishing emails.
According to ESET, smart TVs in particular -- with their microphones, cameras and USB ports -- are increasingly becoming prime targets for malware attacks.
"While we have Nutella-themed USBs for the younger generation, we also have abayas featuring 'oud bottle' designs for the older generations," she says, adding FMM also sells flag-inspired dresses for GCC nationals.
Infected USBs can today be considered a fairly traditional attack vector, along with code attached to downloaded files and drive-bys leaping out of infected websites to get you.
Neil Thorneywork, a former stockbroker, mouthed to his wife to get rid of "the USBs" (computer memory sticks) when police knocked on his door, a court heard.
Almost as alarming was the fact that 44 per cent of users have been affected by local threats such as USBs, CDs and DVDs.
"We have a small plastic shipper display that has earbuds, micro USBs, auxiliary cords and wall chargers," says Professional Cable chief executive officer Jason Bringhurst.
hand-made sweets that cost PS800 a box, diamond-encrusted USBs costing PS22,950 (well, they are shaped like mushrooms) and an octopus bracelet that lights up in the dark.
About 45% of users in the Middle East encountered malwares in the local networks, and through USBs and storage drives in the third quarter (Q3) of 2015, a report by Kaspersky Security Network revealed.
Opposing the move the India Electronics and Semiconductor Association (IESA) chairman Ashok Chandak said: "This is on average almost 160% duty over the basic import price of the USBs in 2GB to 8GB capacities.
National Archives to distribute boxes and USBs to store historical documents and pass on to it.