Features: brand new and high quality This product is a desktop PCI-E expansion card, which requires a free PCI-E slot on the motherboard to install and use. This is a general-purpose PCIE serial port card, designed for POS, ATM and other applications, and can be used for industrial automation system manufacturing and system integration. 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. High performance, the data rate of each port can reach 115200kbps. Make sure whether the slot is blocked by the for image card, and the PCI slot cannot be installed and used. , Never plug it into a PCI slot. Specifications: Single-lane (X1) PCI for Express End-point Controller with PHY integrated Compliant with PCI for Express 2.0 Gen 1; Management 1.2 Supports both legacy and MSI Interrupt Supports Aspm Power Management; Dual or Quad UARTs Bi-directional speeds up to 25 Mbps per port Supports Slow IrDA mode (up to 115200bps) on all Serial Ports Supports multi-drop application for 9-bit mode Openthe supporting CD folder--/Serial-Parallel Card/AX99100 Material:PCB board + metal Colour:Black Cable Length: approx 30cm/11.8in Package Includes: 1 x R232 Expansion Card 1 Set x DB25 to DB9 Data Cables note: Only the above package content, other products are not included. 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.