M.2 B+M 17V352 2S RS-232 multi-port I/O communication card with EXAR's high-performance chipset 17V352 Compliant with PCIe 2.0 Gen 1 (2.5GT/s) with 2 serial ports Each port has many enhanced features such as 256-byte TX and RX FIFOs, programmable fractional baud rate generator, automatic hardware or software flow control, which can be used in point-of-sale systems, remote access servers, factory automation, etc Compliant with PCI Express Specification Version 2.0 Supports x1, x2, x4, x8, x16 (lanes) PCI Express slots Single-lane (x1) PCI-Express endpoint controller with integrated PHY Compliant with PCI Express 2.0 Gen 1 Compliant with PCI Express M.2 specification version 1.0 Compliant with PCI Power Management 1.2 Supports x1, x2, x4, x8, x16 (lane) PCI Express slots Supports 2-port RS232 16 multi-purpose input/output (MPIO) 16-bit general purpose timer/counter Serial data rate up to 31.25Mbps Data bits: 5, 6, 7, or 8 Stop bits: 1, 1.5, 2 256-byte TX and RX FIFOs TX/RX FIFO level counters Automatic RTS/CTS or DTR/DSR hardware flow control with programmable hysteresis Multi-add/drop with automatic address detection Infrared (IrDA 1.1) data encoder/decoder Operating temperature range: -40 to 85 Colour:Green Material:PCB Package Contents: 1x expansion card 1x CD-ROM 2x low-profile brackets 2x serial cables 1x English manual Only the above package content, other products are not included. Note: Light reflection 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.