1、Compliant with PCI Express Base Edition 1.0a / VI specifications. 2、PCI-Express speeds up to 2.5G/S full duplex channels. 3、Compatible with standard 16c550 UART and 16-byte transmit-receive FIFO, 2 serial port transfer rates up to 1Mbyte / sec. 4、Transmission rate: The maximum transmission speed can reach 115200bps. 5、Two DB9 serial ports, built-in 256 bytes of FIFO buffer. Features: 1. Compliant with PCI Express Base Edition 1.0a / VI specifications. 2. PCI-Express speeds up to 2.5G/S full duplex channels. 3. Compatible with standard 16c550 UART and 16-byte transmit-receive FIFO, 2 serial port transfer rates up to 1Mbyte / sec. 4. Transmission rate: The maximum transmission speed can reach 115200bps. 5. Two DB9 serial ports, built-in 256 bytes of FIFO buffer. 6. Supports 5, 6, 7 or 8 data bits and 1 or 2 stop bits. 7. Support odd and even, invalid test, blank 0. Mark 1 and other test mode. 8. Support full-duplex and half-duplex serial port communication. Specification: Chip solution: ASIX99100 Bus type: PCI-ExpressX1 Interface: RS232 Transmission rate: 1.5 MB/S Package List: 1 * Adapter Card 1 * CD 2 * Short Baffle