Descriptions:
Input: USB2.0 port into the computer.
Output: RS232 port to serial devices.
Full compliance with USB 1.1 & 2.0 specification
Easily convert RS232 interface device to USB for connecting PC
Over 1 Mbps data transfer rate
Supports wake-up and intelligent power management
Provides dual buffer for upstream and downstream data transfer
Suitable for PDA and modem, phone and GPS etc
The cable length is 90cm around from end to end
Supports remote wake-up and power management for upstream and downstream data flow.
Installed as a standard Windows COM port,
RS-232 data signals; TxD, RxD, RTS, CTS, DSR, DTR, DCD, RI, GND.
No IRQs required, no IRQ conflicts.
upports the following Operating Systems.
Win 98/Me or above, Windows CE.NET (Version 4.2 and greater), Windows2000/2003/WindowsXP32/64, Win Vista/7 32& 64-bit , MAC OS X or above , Linux 

Package include:
1 x USB to FTDI RS232 Serial Converter
1x CD Driver