I). Product Features: 
 1. Supports standard serial mode, Plug and Play, with automatic recognition; 
 2. Meet Expresscard/54mm standard slot; 
 4. Outputs 4 independent 9-pin standard serial port, rather than exclusive interrupt port virtual device, can be accessed by a variety of serial devices; 
 5. Serial data transfer rate :110-230400Bps; 
 7. Driver Support win98/winme/win2000 / winxp / win2003 / vista. 


 II). Application: 
 1. For new laptops without serial port interface or serial interface, not the laptop. 
 2. For the microcontroller, PLC design and simulation. 
 3. For connecting POS, Access Control, RS232 serial interface peripherals such as a mouse. 
 4. For connecting communication, detection, industrial instruments and meters and other serial interface device 232.