A. This is a general-purpose PCIE serial port card designed specifically for applications such as ATMs and can be used in the manufacturing and system integration of industrial automation systems. B. The PCE4SOP - A01 provides 4 -232 serial ports and modem control signals to be compatible with serial device peripherals. C. It is equipped with a 4 - port -232 serial cable. You can connect a series of serial devices, such as personal computers, terminals, modems, printers, scanners, etc. The data transmission rate of each port can reach 115,200 kbps. D. Note: This product is a desktop PCI - E expansion card and requires an available PCI - E slot on the motherboard for installation and use. Additionally, it is advisable to ensure that the slot is not blocked by other cards, and it cannot be installed and used in a PCI slot. Do not insert it into a PCI slot. E. Specifications: - Single - channel (X1) PCI terminal controller with integrated PHY. - Complies with the PCI 2.0 Gen 1 standard. - Complies with the PCI card specifications. - Complies with the PCI power management 1.2 standard. - Supports four PCI functions. - Supports traditional and modern interrupts. - Supports ASPM power management. F. Serial port interface: - Dual UART or single UART. - The bidirectional transmission speed of each port can reach up to 25 Mbps. - Full serial modem control. - Supports hardware and software control. - Supports 5, 6, 7, 8, and 9 - bit serial transmission. - Supports even parity, odd parity, no parity, space parity, etc. - Supports setting custom rates through an internal phase - locked loop or an external clock. - Supports an on - chip 256 - depth FIFO on the send and receive paths of each serial port. - Supports remote and power management functions. - Supports the serial transceiver shutdown function. - All serial ports support the slow Infrared Data Association (IrDA) mode (up to 115,200 bps). - Supports multi - point applications in 9 - bit mode. - Supports DMA burst transmission. G. Driver installation instructions: Open the folder on the accompanying CD -- / Serial - Parallel Port Card / AX99100. H. Material: PCB board + metal. I. Color: Black. J. Package contents: - 1 R232 expansion card. - 1 driver CD. - 1 DB25 to 4 DB9 data cable. K. Only the above items are included in the package, and other items are not included. L. Note: Light and different monitors may cause slight differences between the color of the item in the picture and the actual item. A measurement error of +/- 1 - 3 cm is allowed.