PCIe Multi-I/O card use the chip of ASIX99100, It supports the maximum rate of 1.5-Mbps and it can be used for PCIe bus DB25+DB9 Serial Parallel Combo expansion, and High speed serial port of PCIe with automatic hardware rate control, Serial port network, RS485 communication, Parallel / Printer port expansion.The PCI-Express to 2*Serial and 1*Parallel card uses the PCI-Express interface standard for expansion bus. enabling this card to be installed on any PCI-Express capable PC desktop system. By using this card add serial and parallel ports to the computer for connecting their devices.The PCI-Express to 2* Serial and 1* Parallel card use the chip of ASIX99100, It supports the maximum rate of 8Mbps and it can be used for PCIE bus RS232 serial port expansion, and high speed serial port of PCIe with automatic hardware rate control, serial port Network, RS485 communication, parallel / printer port expansion.Compliant with PCI Express 2.0 Gen 1Compliant with PCI Power Management 1.2Supports both legacy and PCIEMSI InterruptsSupports ASPM Power ManagementSingle-lane (X1) PCI Express End-point Controller with PHY integratedRS232 Serial PortBi-directional speeds up to 25 Mbps per port Full Serial Modem ControlSupports Hardware, Software Flow ControlSupports 5, 6, 7, 8 and 9-bit Serial formatSupports Even, Odd, None, Space and Mark paritySupports On Chip 256 Byte depth FIFOs in Transmit, Receive path of each Serial PortSupports remote wakeup and power management featuresSerial Port transceiver shutdown supportSupports Slow IrDA mode (up to 115200bps) on all Serial PortsSupports multi-drop application for 9-bit modeProvides RS-232 serial ports with +5 or +12 VDC power output via COM 1st or 9th pinSupports DMA burst transferSupport special baud rate (option)IEEE1284 Parallel PortCompatible with IEEE 1284-SPP / Byte / ECP Mode(Different batches, product appearance and color may be different, does not affect the use)Colour:random colors, don't accept the specified colorMaterial:PCB+MetalSize:86 x 60MMPackage Contents:1 x Extension CardOnly the above package content, other products are not included.Note: Light shooting 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.