Description: PCI-bus high-speed dual 16650 serial ports System requirements:? Pentium-class computer with one available PCI slot? DOS/Windows 3.1x or later Version: V2.0 Type slot: 32-bit PCI bus Port type: RS232 serial port? Two DB9 serial ports? Built-in high-speed 16650 UART with 32-byte transmit/receive FIFO buffers OS supports: DOS/Windows 3.1x, Windows 95/98/NT 4.0 Regulatory Approval(s): FCC DoC - IO1888 Warranty: 5 years Retail package:? C-size color box? Dimensions: 7 1/2" (H) x 11 9/16" (W) x 2 25/32" (D)? Weight: 1 lb Master carton:? Quantity: 20? Weight: 23 lbs? Dimensions: 15 3/4" x 14 5/8" x 24" Features & Benefits Conforms to PCI v2.1 Plug and Play Full support for DOS- and Windows-based software Improves I/O access speed up to 8 times faster than existing ISA-bus serial ports. Reduces CPU load and improves system performance dramatically IRQ sharing feature eliminates IRQ conflicts Solves ISA slot expansion limits and adds fast PCI serial interface to your system Two high-speed 16650 UART serial ports (9-pin) support baud rates up to 920Kbps Ideal for 56K V.90 external modems and ISDN terminal adapters and other high-speed serial port devices Built-in 32-byte FIFO buffers dramatically increase data transmit/receive speed, especially under Widows multitasking environment