USB - Wikipedia. Universal Serial Bus (USB)Certified USB logo. Type. Bus. Production history. Designer. Compaq, DEC, IBM, Intel, Microsoft, NEC and Nortel. Designed. January 1. Produced. Since May 1. USB 2863 Device driver download. All the latest manufacturer's drivers available for free from Software Patch. Extensive database updated regularly with new versions. Atmel AVR4904: ASF - USB Device HID Keyboard Application Features It has become commonplace on other devices, such as smartphones, PDAs and video game consoles. Also, there are 5 modes of USB data transfer, in order of increasing bandwidth: Low Speed (from 1. Full Speed (from 1. High Speed (from 2. Super. Speed (from 3. Super. Speed+ (from 3. USB devices have some choice of implemented modes, and USB version is not a reliable statement of implemented modes. Modes are identified by their names and icons, and the specifications suggests that plugs and receptacles be colour- coded (Super. Speed is identified by blue). Unlike other data buses (e. Ethernet, HDMI), USB connections are directed, with both upstream and downstream ports emanating from a single host. This applies to electrical power, with only downstream facing ports providing power; this topology was chosen to easily prevent electrical overloads and damaged equipment. Thus, USB cables have different ends: A and B, with different physical connectors for each. Therefore, in general, each different format requires four different connectors: a plug and receptacle for each of the A and B ends. USB cables have the plugs, and the corresponding receptacles are on the computers or electronic devices. In common practice, the A end is usually the standard format, and the B side varies over standard, mini, and micro. The mini and micro formats also provide for USB On- The- Go with a hermaphroditic AB receptacle, which accepts either an A or a B plug. On- the- Go allows USB between peers without discarding the directed topology by choosing the host at connection time; it also allows one receptacle to perform double duty in space- constrained applications. There are cables with A plugs on both ends, which may be valid if the cable includes, for example, a USB host- to- host transfer device with 2 ports, but they could also be non- standard and erroneous and should be used carefully. The standard and mini connectors have a design lifetime of 1,5. The micro connectors were designed with frequent charging of portable devices in mind, so have a design life of 1. Likewise, the springy component of the retention mechanism, parts that provide required gripping force, were also moved into plugs on the cable side. A team including Ajay Bhatt worked on the standard at Intel. USB, short for Universal Serial Bus, is an industry standard developed in the mid-1990s that defines the cables, connectors and communications protocols used in a bus. MSI H61M-E33 board - Intel C600 AHCI controller? Download driver for USB Host Controller, Intel(R) USB Universal Host Controller, Vistax32, Win7x32. File Information Released By: LENOVO Operating System: Windows. The first widely used version of USB was 1. September 1. 99. 8. The 1. 2 Mbit/s data rate was intended for higher- speed devices such as disk drives, and the lower 1. Mbit/s rate for low data rate devices such as joysticks. Hewlett- Packard, Intel, Lucent Technologies (now Alcatel- Lucent), NEC, and Philips jointly led the initiative to develop a higher data transfer rate, with the resulting specification achieving 4. Mbit/s, a 4. 0- times increase over the original USB 1. The USB 3. 0 specification was published on 1. November 2. 00. 8. Its main goals were to increase the data transfer rate (up to 5 Gbit/s), decrease power consumption, increase power output, and be backward compatible with USB 2. It did not allow for extension cables or pass- through monitors, due to timing and power limitations. Few USB devices made it to the market until USB 1. August 1. 99. 8, fixing problems identified in 1.
USB 1. 1 was the earliest revision that was widely adopted and led to Legacy- free PCs. Due to bus access constraints, the effective throughput of the High Speed signaling rate is limited to 2. Mbit/s or 3. 5 MB/s. The most important of these ECNs are included into the USB 2. USB. org. Also receptacle that accepts both plugs for On- The- Go. These should not be confused with Micro- B plug and receptacle. Pull- up/Pull- down Resistors ECN: Released in May 2. Interface Associations ECN: Released in May 2. New standard descriptor was added that allows associating multiple interfaces with a single device function. Rounded Chamfer ECN: Released in October 2. A recommended, backward compatible change to Mini- B plugs that results in longer lasting connectors. Unicode ECN: Released in February 2. This ECN specifies that strings are encoded using UTF- 1. LE. USB 2. 0 specified Unicode, but did not specify the encoding. Inter- Chip USB Supplement: Released in March 2. On- The- Go Supplement 1. Released in December 2. USB On- The- Go makes it possible for two USB devices to communicate with each other without requiring a separate USB host. In practice, one of the USB devices acts as a host for the other device. Battery Charging Specification 1. Released in March 2. April 2. 00. 9. Adds support for dedicated chargers (power supplies with USB connectors), host chargers (USB hosts that can act as chargers) and the No Dead Battery provision, which allows devices to temporarily draw 1. A current after they have been attached. If a USB device is connected to a dedicated charger, maximum current drawn by the device may be as high as 1.
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