M.2 B+M 17V352 2S -232 multi-port I/O communication card with EXAR's high-performance chipset 17V352 Compliant with PCIe 2.0 (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- (x1) PCI-Express endpoint controller with integrated PHY Compliant with PCI Express 2.0 Compliant with PCI Express M.2 specification version 1.0 Compliant with PCI Power Management 1.2 Supports x1, x2, x4, x8, x16 () PCI Express slots Supports 2-port RS232 16 multi-purpose input/output () 16-bit 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 level counters Automatic / or DTR/ 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.