Digi Neo PCI Express 4-port (no cables )Primary InformationNetworking Type : Serial Card Form Factor : Plug-in card Networking Interface : PCI Express Networking / Ports Qty : 4 Data Transfer Rate : 460.8 Kbps Data Link Protocol : RS-232 Connectivity Technology : Wired Green Product InformationEnergy Star Compliant : Y UNSPSC CodeUNSPSC Code : 43201404