Perle SPEED LE1P Express. Host interface: PCIe, Output interface: Parallel, PCI Card form factor: half-height (low-profile). Certification: REACH, WEEE FCC Part15,Class B EN55022:1998 + A1:2000 + A2:2003 Class A. Compatible operating systems: Windows Server 2008 R2 Windows 7 (32/64 bit) Windows Server 2008 (32/64 bit)