Features: Brand new and high quality This product is a desktop PCI-E expansion card, requiring an available PCI-E slot on your motherboard for installation and use. This is a general-purpose PCIE serial port card, designed for POS, ATM, and other applications, suitable for industrial automation system manufacturing and system integration. Provides 4 RS-232 serial ports and modem control signals to ensure compatibility with serial port equipment. It comes with a 4-port RS-232 serial cable. Connect a variety of serial devices such as computers, terminals, modems, printers, scanners, etc. High performance, with each port reaching data rates of up to 115200kbps. Ensure the slot is not blocked by a graphics card and that a PCI slot cannot be installed and used. Never connect it to a PCI slot. Specifications: Single-lane (X1) PCI Express End-point Controller with integrated PHY Compliant with PCI Express 2.0 Gen 1; Management 1.2 Supports both legacy and MSI Interrupts Supports Aspm Power Management; Dual or Quad UART 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 Open the supporting CD folder --/Serial-Parallel Card/AX99100 Material: PCB board + metal Color: Black Cable length: approx. 30 cm/11.8 inches Note: Only the above package content is included; other products are not. Light photography and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is 1-3 cm. Package includes: 1 x R232 expansion card 1 Set of x DB25 to DB9 data cables