Siig CyberSerial Dual. Host interface: PCI, Output interface: RS232, Connector(s): 9-pin. Data transfer rate: 0.23 Mbit/s. Certification: FCC, CE, RoHS. Colour of product: Green, Silver. Connectivity technology: Wired, Compatible operating systems: Windows 7/Vista/XP/Server 2003/Server 2008/2000/NT 4.0/ME/98SE/98/95, Power requirements: 3.3/5V