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USB serial connection to make more efficient

As technological innovation forward, equipment, a variety of new media formats, and plenty of cheap storage aggregation. Need more bus bandwidth to maintain the interactive experience users expect. Further, the connection between the PC user application performance requirements, and these increasingly complex peripheral device. USB (USB to serial) involves the demand in this area, with the use of these new add a higher transmission rate and equipment.
         USB interface can be used to connect up to 127 kinds of peripherals, such as PC, modem and keyboard. Since the 1996 launch of USB, serial and parallel ports have been successfully replaced, and became one of the interfaces and a large number of today's PC must be equipped with smart devices.
USB version
The first generation: USB maximum transfer rate of 1.0 / 1.1 to 12Mbps. 1996 launch.
The second generation: USB 2.0 maximum transfer rate of up to 480Mbps. USB 1.0 / 1.1 interface and USB 2.0 are mutually compatible.
Third generation: USB 3.0 maximum transfer rate of 5Gbps, downward compatible with USB 1.0 / 1.1 / 2.0

         Super speed USB to the ubiquitous USB standard brings significant performance improvements, while maintaining compatibility with USB enabled devices currently deployed in the multibillion-dollar market. Ultra High Speed ​​USB provides USB data 10 times high-speed transfer rate, and to improve power efficiency.

USB key performance there?
A common external device interface.
You can quickly transfer large amounts of data.
Can connect many different devices.
Support hot-swapping.
You can not have an external power supply.

Fully compatible with USB (UniversalSerial Bus) Rev: 2.0
  Supports RS-232 interface
  Standard DB9-pin serial port
  Over 1Mbps data transfer rate
  Direct access USB bus power, no external power supply
  +/- 15KV ESD antistatic protection
  Chip (ASIC) USB port to the serial port communication
  Use of the environment: -40 ℃ to 85 ℃, relative humidity of 5% to 95%
  Support Win98 / Win2000 / WinXP / Vista / Win7 / Linux, etc.