SIIG DP Cyber Serial 4S PCIe - serial adapter - 4 ports Primary Information Networking Type: Serial adapter - 4 ports Form Factor: Plug-in card - low profile Networking Interface:PCI Express Networking Ports Qty:4Data Transfer Rate:15 MbpsData Link Protocol:RS-232Connectivity Technology:WiredExpansionInterfaces Connections:4 x Serial - RS-232 - 9 pin D-Sub (DB-9) ( On cable )UNSPSC CodeUNSPSC Code:43201404