Settable to COM1-COM99.

Supports fast data transfer rates (up to 921,600 bps).

Provides 4 DB9 (9-pin male) serial connectors. 2 are on the back of the card and 2 are via a dongle.

Uses only 1 IRQ and can share an interrupt with other plug & play devices in your system.

Designed for use with Windows 95, 98, ME, 2000, XP, Vista, 7, NT 4.0, DOS, Linux kernel 2.0.xx and later & OS/2.

Lifetime toll-free technical support is available for this product at 1-800-274-7897 (USA & Canada only).

Product comes with a 1 year warrantee, and a 30-day money back guarantee with no restocking fee.