Regulatory approval(s): FCC Class B (DoC) and CE RoHS-compliant Chipset: Oxford OxPCIe952 Bus type: PCI Express x1 Port type: Two 9-pin RS232 serial ports (2nd port on a separate bracket) Compliant with PCI Express Base Specification Revision 1.0a Built-in 128-byte FIFO buffers dramatiWindows multitasking environment cally increase data transmit/receive speed, especially under 4-layer PCB board: separate layers for data grounding. Greatly reduces signal noise loss. Delivers more reliable high-speed data transfers Enhanced bracket design to prevent bending. Connected to PCB with washered screws for a more secure connection. Data Transfer Rate: 920Kbps Form Factor: Plug-in Card Shipping Dimensions : 6.6" Height x 17.0" Width x 24.8" Depth Warranty : Lifetime