Specifications: Item Type: Expansion Card Interface: PCI-E Channel: 2.5Gb/s Full-duplex channel Expansion Interface: RS-232 * 4 Compatible Standards: 16c550 UART standard with 256-byte transmit and receive FIFO 256k Data Transmission: Up to 115.2Kbps Transmission Mode: Support RS-232 control, full duplex Parity Bit: None / even / odd / space / Supported Systems: for / for Voltage Parameter How to Use Package List 1 x Expansion Card 1 x Expansion Interface Board