Features:

• Conforming to the USB 2.0 and USB 1.1 standards
• "Uses the same easy-to-use D-SUB 9 pin connectors as a PC. The converter has a D-SUB 9 pin connector (female), allowing you to directly connect it to a device such as a modem. You can also connect it to a cable having a D-SUB 9 pin connector (female) through the bundled gender changer. (* The gender changer is attached before shipment.)"
  
• "Maximum communication speed = 921,600bps. This converter is equipped with separate 128-byte and 384-byte buffers for transmit and receive. "
  
• Driver software is supplied to allow the serial ports to be used as standard Windows COM ports.(They can be set to arbitrary COM port numbers.) A maximum of 127 terminals can be installed as configured in the range COM1 to COM256.
  
• The communication lines for each channel are electrically isolated from each other and from the PC. Surge protection is provided for each RS-232C signal line.

• Bus  :  USB
• Function  :  RS-232C
• The number of channels  :  1ch
• Insulation  :  Isolation and serge-proof
• Transmission system  :  RS-232C (Async.)
• Access speed  :  300 -- 921.6kbps