Siig PCI-1S+DOS. Host interface: PCI, Output interface: RS232, Connector(s): 9-pin. Data transfer rate: 0.23 Mbit/s. Colour of product: Black, Orange. Connectivity technology: Wired, Form factor: LP, Compatible operating systems: Windows 95/98/98SE/ME/2000/XP/Server 2003 Linux Kernel 2.4.x +