Features: 1.2 Serial Ports: Serial adapter card has two serial ports to easily expand more devices. The serial port supports RS 232 protocol, the transmission speed is up to 115200bps, and it also supports hardware and software stream control. 2.Support System: Serial port expansion card supports for Linux, for Windows XP, for Vista, for Win 7, for Win 8, for Win 8.1, for Win 10 32 64bit. 3.M.2 Interface: M.2 interface, compliant with PCI Express 2.0 Gen 1, compliant with PCI Express M.2 version 1.0, compliant with PCI Power Management 1.2. 4.Plug and Play: Serial adapter card is plug and play, no other drivers are needed, it is convenient and fast to use, and its performance is stable. 5.Scope of Application: Adapter card can be used for serially connected equipment, serial network, monitoring equipment, data acquisition system, POS terminal and industrial PC, serial I, 0, USB of add on card, I O expansion of embedded system. specification:Item Type: M.2 Serial Port Adapter Card Material:PCB Interface Type: M.2 Endpoint Controller: Single Lane (x1) PCI Express Endpoint Controller with integrated PHY PCI Express 2.0 Gen 1: Compliant PCI Express M.2 Version 1.0: Compliant PCI Power Management 1.2: Compliant Dual UART or Quad UART: Support RS 232, RS 422, RS 485 Multi Protocol: Support Bidirectional Speed: Up to 25 Mbps Bidirectional Speed Per Port Function: Full Serial Modem Control Hardware, Software Stream Control: Support 5, 6, 7, 8 and 9 Bit Serial Formats: Supported Even, Odd, None, Space and Sign Parity: Supported Custom Baud Rate: Support Custom Baud Rate Via Internal PLL or External Clock Function: Supports an on chip 256 byte deep FIFO in the Transmit and Receive Way of Each Serial Port Remote Wake Up and Power Management Functions: Support Serial Transceiver Shutdown: Support Slow IrDA Mode: Supports Slow IrDA Mode (115200bps) On All Serial Ports. Multipoint Application in 9 Bit Mode: Support DMA Burst Transfer: Support Applications: Serial Connected Devices, Serial Networks, Monitoring Devices, Data Acquisition Systems, POS Terminals and Industrial PCs, serial I 0 USB for add in cards, I O Expansion for Embedded Systems System Requirements: For Linux, for Windows XP, for Vista, for Win 7, for Win 8, for Win 8.1, for Win 10 32 64bit PackageList: 1 x Expansion Card 2 x Patch Cords 2 x Bezels 4 x Screws 1 x Drive Disk