Connecting USB with the traditional RS-232 serial port, this cable connects cellphones, PDAs, digital cameras, modems, or ISDN terminal adapters through your USB port. Has a data transfer rate of over 230 kbps. Since the adapter uses no IRQs, there are no IRQ conflicts, and it is ideal for when you need many serial devices attached to your PC. Frees your RS-232 port for other uses.
Compatible with USB specification 1.1 & 2.0
Support all common RS-232 serial port
Automatic USB protocol handling
Support remote wake-up and power management
Bus power support ,no external power supply required.
Support Win 98 / ME / 2000 / XP / Vista / Windows 7/8/8.1 and Mac 10.4/5