Features
• PCIe 2.0 Gen 1 compliant
• x1 Link, dual simplex, 2.5 Gbps in each direction
• Suitable for M.2 slot with key M or B based on PCIe
• Data read/write 32-bit operation
• Global interrupt status register for both UARTs
• 16 multi-purpose inputs/outputs (MPIOs)
• Two independent UART channels controlled with
• Support Bits per second Data transfer rates from 300 baud to 921600baud
• 16550 compatible register Set
• 256-byte TX and RX FIFOs
• MCU enable controls RS485 bidirectional data
Signal
• RS232:  DCD,RXD,TXD,DTR,GND,DSR,RTS,CTS,RI
• RS422:  TX - ,TX+, RX +,RX - GND
• RS485:  Data-, Data +
• Data bits：4,5,6,7,8
• Stop bits：1,1.5,2
• Parity bit：Odd, even, mark, space, None
• Flow control： None，Xon / Xoff, Hardware
• Operating Temperature：-40°C to +85°C
• Storage Temperature:-65°C to +150°C

System Requirements
• Windows® Server 2003, 2008, 2012,2016,2019
• Windows® XP, Vista, 7, 8,8.1,10
• Linux 2.6.27, 2.6.31, 2.6.32, 3.x.x and newer
• One free M.2 key M or key B slot

Package Contents
• 1 × M.2 to RS232 +RS232/422/485 Card
• 1 × User Manual
• 2 × Low Profile
• 1 × CD Driver