Features: Brand new and high quality Wide Use: PCI-Express I/O card uses the latest PCI-Express interface as an expansion bus, the standard interface that is most commonly used in the market's PC desktop system is widely used. Convenient as the latest motherboards no longer come with any or enough legacy serial or parallel ports. Expand the system with the extra serial and parallel ports to connect their external peripherals. This PCI-Express I/O card offers superior performance and unmatched data transfer rates, which is also an ideal solution for industrial automation applications. Speed: Single-Lane(x1) PCI-Express with throughput up to 2.5 Gbps. Supports Windows 98, ME, NT4.0, 2000, XP 32-/64-bit, Server 2003-2008 32-/64-bit, Vista 32-/64-bit, for Windows 7 32-/64-bit and Linux. Specifications: Product Name: Mini pci-E to RS232 Serial Port Card Number of Interfaces: 2 RS232 Serial Ports, 1 Parallel Port Applicable Slot: mini PCI-E Bus Bandwidth: about 6Gb/s Product Size: about 5.3x3cm/2.09x1.18in Serial Port (RS-232) Interface. for 16C550, 16C552, 16C554 AND 16C750 with enhancement Maximum data rate 230.4 Kbps on each port Supports 5, 6, 7 or 8 data bits serial format Supports Even, Odd, None parity, space 0 & mark 1 Compatible with PCI-Express Base Specification Revision 1.1 Optional jumper to set RI, +5V or +12V on pin 9 of each serial port DB9 connector (Special models) Note: There might be a little error in size for manual measurement. Color deviation might differ due to different monitor settings, please understand. Package Includes: 1PC x mini PCIe Card