Product Name: USB to RS232 4 Ports Cable
Product Model: CVT-RSC-606089 
Description:

Full compliance with the USB specification v1.1(0) and USB CDC v1.1
Comptible to USB specification 2.0
Support up to 4 RS232 Serial interface
USB signal VCC, DATA+, DATA-, GND, FG
RS-232 signal RX, TX, RTS, CTS, DTR, DSR, DCD, RI, GND
Over 1Mbps data transfer rate
Baud rate 300-115200bps, automatic rate sensing
Support Remote wake-up and power management
Support automatic handshake mode
Self powered from USB port or external power supply
Average power consuming less than 150 mA
Static electricity and surging protection
USB: type A female connector, RS-232: side DB-9 male, DB25 male