Features:Allows to connect more serial & parallel device to your computer easily.Two (2) 9-pin RS-232 DB9 male serial ports and one DB 25 female parallel LPT port available.Compliant with PCI Express specification Revision 1.1.PCI Express single-lane (x1) bus bandwidth 2.5 Gbps.Support for DOS, for Windows 8 / 7 / Vista / XP / 2000 / Server 2003-2008 32/64-bit, for Linux operating systems.Parallel interface (LPT):I/O address: Assigned by the BIOSIRQ: Distributed by the BIOSSupport SPP, PS2, EPP & ECP modeSerial Interface (RS232):Comply with industrial standard 16C450/16C550 UARTOn-Chip 256-bit depth FIFOs in Transmit, support H/W, S/W flow controlData transmission rate of each serial port can be up to 250Kbps Baud rate: 230.4 KbpsSerial communication parameter data bits: 5, 6, 7, 8Stop bit: 1, 2Parity: None, Even, Odd, Space, MarkFlow control: RTS/CTS, XON/XOFFI/O address: Assigned by the BIOSIRQ: Distributed by the BIOSSerial signal RS - 232: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GNDSpecifications:Chip: WCH382LType: PCI-E to Serial + Parallel Interface CardInterface: 1 x PCI-E, 2 x Serial, 1 x ParallelOperating Systems: Support for DOS, for Windows 8 / 7 / Vista / XP / 2000 / Server 2003-2008 32/64-bit, for Linux operating systems.Package weight: 125gPackage Included:1x PCI-E to Dual Serial Port + Parallel Port Controller Card1 x Drive CD.Note:Please note that the new type and old type of this product will be sent randomly and make sure you will not mind before ordering.