No USB/Serial adapter works for the Serial Box Interface and Windows 2000, XP, Vista, or later. The least expensive replacement is to get a Go! Link interface and DIN-BTA adapters.

If you have a computer with USB only (no serial or COM ports), and own an older Serial Box Interface, here are your options:
(1) Replace the Serial Box with a Go!Link (GO-LINK), or one of our other interfaces:
(2) You can probably use the Serial Box Interface with a USB only computer running Windows 98 or Windows ME, using a Keyspan USB-Serial adapter. We have not extensively tested this option, but in limited testing we have been successful. We have not been successful using other brands of USB-serial adapters (e.g., Belkin).

Related information, including the ULI:
How do I connect my ULI to a Windows computer that does not have a serial port?
How do I connect my ULI or Serial Box Interface to a Macintosh that does not have a serial port?