Astrotek USB to Serial RS232 DB9 Com Port 9Pin Converter Adapter Cable for POS System Bar Code Scanners Label Printer PDA Modem ISDN Terminal Adapters 45cm The ASTROTEK USB to DB9 Serial RS232 Adapter 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 • Perfect for connecting DB9 devices to a PC without serial ports • Available in single, two-port and four-port DB9 to USB configurations • Length: 45cm