Features: 100% brand new and high quality Wide Usage: The PCI-Express I/O card uses the latest PCI-Express interface as the expansion bus, the standard interface of which the most common PC desktop system in the market is widely used. Convenient for latest motherboards are no longer to come with any or enough number of legacy serial or parallel ports. Expand the system with the additional serial and parallel ports for connecting their external peripheral devices. This PCI-Express I/O card offers superior performance and unmatched data transfer rates, which is also an ideal solution for the industrial automation applications. Speed: Single-Lane(x1) PCI-Express with throughput up to 2.5Gbps. Supports Windows 98,ME,NT4.0,2000,XP 32-/64-bit,Server 2003-2008 32-/64-bit, Vista 32-/64-bit,Windows 7 32-/64-bit, and linux. Package Includes: 1PC x mini PCIe Card 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: approx 5.3x3cm/2.09x1.18in Serial Port(RS-232) Interface. Compatible with 16C550, 16C552, 16C554 AND 16C750 with enhancement Maximum data rate 230.4Kbps on each port Supports 5,6,7, or 8 data bits serial format Supports Even, Odd, No parity, space 0 & mark 1 Compliant with PCI-Express Base Specification Revision 1.1 Optional jumper for setting RI, +5V, or +12V on pin 9 of each serial port DB9 connector(Special models) note: There might be little error of size for manual measurement. The colors deviation might differ due to different monitor settings, please kindly understand.