Settable to COM1-COM99.

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, 8, 10, NT 4.0, DOS & Linux.

NOTE: The latest drivers can be downloaded at http://www.asix.com.tw.

(Special note for using this card in a DOS environment: The IRQ which is assigned to the card by the computer through plug & play is the only IRQ you can use, so for this card to work in DOS, your DOS application must let you specify the IRQ. Some DOS software only lets you specify COM1, COM2, etc. and they assume the IRQ [IRQ4 for COM1, IRQ3 for COM2, etc.] which won't work in this case.)

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