Features: 1.Combo Expansion: Add 2 high speed DP9 pin, RS 232 serial ports and a DP25 pin parallel port for 25pin parallel printers to your PC via the MINI PCIE expansion slot. 2.Applicable Slot: suitable for mini PCIE slot, not for msata or mini PCIE wireless network card slot, support for Windows and for Linux. 3.Standard Brackets: DP25 pin parallel baffle cable and DP9 pin RS 232 serial baffle cable with standard brackets for 4U chassis. 4.PCB Board: PCB board, high temperature resistance, cold resistance, long term use without deformation, so as to ensure long term stability 5.Scope of Application: Serial parallel expansion card for standard contour desktop, server, for sales terminal, PLC, factory control, automation, scientific sensor, scanner, oscilloscope. specification:Item Type: Mini PCIe Serial Parallel Expansion Card Material:PCB Number of Interfaces: 2xDB9 Pin RS 232 Serial Port, 1xDP25 Pin Parallel Port Applicable Slot: Mini PCIE (Not for Msata or Mini PCIE Wireless Network Card Slot) Bus Bandwidth: About 6Gb/s PackageList: 1 xAdapter 1 x Print Port Baffle Line 1 x Serial Baffle Cable (RS232) 1 x Screw