The USR® 56K* USB Modem, now with voice‡, delivers the performance and reliability USR is known for, in a compact, flexible form factor. This controller-based modem integrates powerful communications processing functions into the modem itself, for assured performance without sapping your computer's processing power. It is also broadly compatible across major operating systems including Linux, Windows and Macintosh (including Windows Server 2016, Windows 10‡, Sierra§, El Capitan, and Yosemite). V.22 Fast Connect, which reduces the connection sequence time for very small data transfers, makes this modem ideal for Point of Sale (POS) systems. The USB modem also supports USR Modem on Hold application to screen incoming voice calls while online, and to answer calls without losing your internet connection — no second phone line is needed!†
Form Factor External - USB
OS Compatibility Windows, Linux, Mac
Product Code: USR5637
US Availability: Discontinued, Recommended Replacement**: USR5639
Canada - Discontinued.
Europe - Discontinued.
Middle East - Discontinued.
Asia Pacific - Discontinued.
Latin America - Discontinued.
For Export Control (ECCN & HTS) please Contact Us for the latest information.
* Capable of receiving at up to 56 Kbps and sending at up to 48 Kbps (or 31.2 Kbps with V.90 server). Due to FCC regulations on power output, receiving speeds are limited to 53.3 Kbps. Actual speeds may vary. V.92, V.90, and V.22 features require compatible phone service and support from your Internet Service Provider (ISP). USR modems featuring V.92 enhancements are backward compatible and will negotiate the highest possible speed when connecting to an ISP.
† Call Waiting service required for using USR Modem on Hold application and Modem on Hold. Call Waiting/Caller ID service required for utilizing Caller ID capability.
‡ Voice features require voice firmware available at www.usr.com/support/5637. Voice messaging requires additional third party software. Software included with the product enables data/fax support only. Voice features are available on Windows 10 after installing the Cumulative Update for Windows 10 Version 1607 (KB3206632).
§ Fax features no longer supported in macOS Sierra Version 10.12.
** USB Softmodem (USR5639) is the recommended replacement for USB Faxmodem USR5637, but features and specifications do vary. It is suggested to verify requirements before purchasing replacement units.