Brainboxes PX-320. Host interface: PCIe, Output interface: RS422/485 DB9. Width: 20 mm, Depth: 105 mm, Height: 80 mm. Package weight: 153 g. Connectivity technology: Wired, Package dimensions (WxDxH): 145 x 150 x 44 mm, Compatible operating systems: Windows 2000, XP, Server 2003, Vista, Server 2008, Windows 7