Product Features.The serial port can realize the power supply of pins 1 and 9 Support special rate Industrial temperature range: -40 to 85C power chip, can achieve 5v/12v power supply without external power supply. The computer host suitable for PCI-E slot can provide 4 standard DB9-pin RS232 serial ports, and the bidirectional speed of full serial modem control of each port is up to 25Mbps, which supports remote and power management functions. 1. Features PCI Express Single- (X1) PCIExpress endpoint control with PHY integration Compliant with PCI Express 2.0 Compliant with PCI Express Card Specifications Compliant with PCI Power Management 1.2 Supports both legacy and interrupts Support ASPM power management Equipped with short iron pieces (optional), supports 2U chassis. serial port Dual UART or UART Supports -232 full serial modem control bi-directional speeds up to 25Mbps per port Supports hardware and software flow control Supports 5, 6, 7, 8, 9 bit serial formats Support serial communication verification mode: even, odd, none, 0, 1 Supports on-chip 256- for transmit and receive on each serial port path Supports remote and power management functions Support serial port transceiver shutdown All serial ports support slow IrDA mode (up to 115200bps) Support 9-bit mode multi-point application Provide -232 serial port 5v or 12v DC power output through COM pin 1 or 9 Support DMA burst transfer Operating temperature range: 0 to 70C or -40 to 85C (optional) Support special rate (optional) Applications Serial Connected Devices Serial Network/Monitoring Devices Data Acquisition Systems Terminals and Industrial PCs Add-in Cards for Serial I/O/USB 1/0 Expansion forEmbedded Systems System Requirements Windows XP/2003 Server/Vista/7/8.x/10 Linux 2.6.15 and later Android 1.x/2.x/3.x/4.x/5.x Material:PCB colour:Black Package Contents: 1 x Expansion Card Only the above package content, other products are not included. Note: Light 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.