C2G 81632 0.45m USB 2.0 -A Male to DB9 Male Serial Adapter Computer Camera Cable
1 x C2G USB to DB9 Male Serial Adapter. Windows 8 compliant. 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.