This is a general-purpose PCIE serial port card, designed compatible with POS, ATM and other applications, and can be used compatible with industrial automation system manufacturing and system integration.PCE4SOP-A01 provides 4 RS-232 serial ports and modem control signals to ensure the compatibility of serial port equipment peripherals.It is equipped with a 4-port RS-232 serial cable. You can connect a variety of serial devices such as PCs, terminals, modems, printers, scanners, etc. The data rate of each port can reach 115200kbps.PS: This product is a desktop PCI-E expansion card, which requires a free PCI-E slot on the motherboard to install and use. Also, make sure whether the slot is blocked by the image card, and the PCI slot cannot be installed and used. , Never plug it into a PCI slot.Specifications:Single-lane (X1) PCI Express End-point Controller with PHY integratedCompliant with PCI Express 2.0 Gen 1Compliant with PCI Express card specificationsCompliant with PCI Power Management 1.2Supports four PCI Express functionsSupports both legacy and MSI InterruptSupports ASPM Power ManagementSerial Port InterfaceDual or Quad UARTsBi-directional speeds up to 25 Mbps per portFull Serial Modem ControlSupports Hardware, Software Flow ControlSupports 5, 6, 7, 8 and 9-bit Serial compatible withmatSupports Even, Odd, None, Space and Mark paritySupports Custom baud rate by internal PLL or external clockSupports On Chip 256 Byte depth FIFOs in Transmit, Receive path of each Serial PortSupports remote wakeup and power management featuresSerial Port transceiver shutdown supportSupports Slow IrDA mode (up to 115200bps) on all Serial PortsSupports multi-drop application compatible with 9-bit modeSupports DMA burst transferDriver installation instructions:Openthe supporting CD folder--/Serial-Parallel Card/AX99100Material:PCB board + metalcolour:BlackPackage Contents:1 x R232 expansion card1 x drive CD1 x DB25 to 4 DB9 data cablesOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.