XR17V358 integrates 16 enhanced 16550 UARTs, A general- 16-bit timer/counter and 16 multi-function I/O () functions. Each UART channel has its own 16550 UART compatible configuration register for individual channel control, status and data transfer. In addition, each UART channel has 256- transmit and receive , automatic / or DTR/ hardware flow control, automatic XON/XOFF, special character flow control, Programmable transmit and receive trigger levels, infrared encoder/decoder (IrDA version 1.1), and a programmable fractional baud rate generator with a prescaler divided by 1 or 4, and 4x sampling rate is 25 Mbps data rate. Single 3.3V power supply Internal buck regulator for 1.2V core PCIe 2.0 compliant, x1 link, dual simplex, 2.5Gbps each direction Support x1/x4/x8/x16 card slot bus interface EEPROM interface configuration, data read and write burst operations Global interrupt status register for all 16 UARTs Serial data rates up to 25 Mbps 16 multi-function inputs/outputs (MPIOs), 6-bit general- timer/counter Sleep mode with indicator light Eight UART channels via: 16550 compatible register set 256- TX and RX Programmable TX and RX trigger levels Fractional baud rate generator Automatic / or DTR/ hardware flow control with programmable hysteresis Automatic Xon/Xoff software flow control -485 half-duplex direction control output with programmable turnaround delay Multipoint automatic address detection Infrared (IrDA 1.1) data encoder/decoder Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:As Shown Material:PCB+Plastic Package Contents: 1 x PCI-E XR17V358 8S multi-serial I/O card 1 x DB9 terminal cable 1 x CD driver 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.