Perle SPEED4 LE. Host interface: PCI, Output interface: RS-232, Connector(s): RJ-45. Certification: - REACH - RoHS - WEEE - FCC Part15,Class B - EN55022:1998 + A1:2000 + A2:2003 Class A. Connectivity technology: Wired, Form factor: Standard, Compatible operating systems: - Windows Server 2008 R2 - Windows 7 (32/64 bit) - Windows Server 2008 (32/64 bit)