USRobotics
U.S. Robotics 56K USB Controller Dial-Up External Fax Modem w/Voice
Best external modem for legacy dial-up and fax communication needs.
Connect with confidence using the U.S. Robotics USR5637, a 56K USB Controller Dial-Up External Fax Modem with integrated voice capabilities. This modem, presented as new surplus stock in its original packaging, features a dedicated controller for efficient performance without taxing your computer's resources. It offers broad compatibility across Windows, Mac OS, and Linux systems. Supporting V.92 data rates, it also includes Class 1 Fax and V.80 Video Conferencing support, making it a versatile communication tool.
$74.95
Owner Satisfaction
4.6
/ 5
Category Rank
7
/ 184
#7 in Modems
Price vs Category Average
-86%
Below average
Data Standards
.92.90.34.32.32.22.22.23.21
/ V, V, V, Vbis, V, Vbis, V, V, And V
Who it's for
- Users dealing with unstable or low-quality telephone connections
- Laptop owners needing simple, driver-friendly external connectivity
- Small offices requiring dedicated fax and voice management tools
Who should skip it
- Modern internet users expecting high-speed streaming and browsing
- Households relying exclusively on VoIP or cellular networks
- Budget-conscious buyers seeking value for legacy hardware
Performance breakdown
System Resource Efficiency
Dedicated hardware controller prevents CPU strain during data transmission.
OS Compatibility
Broad driver support spans legacy systems through modern Windows and Linux.
Connection Reliability
Proven V.92 standard ensures stable handshakes for dial-up environments.
Fax Functionality
Class 1 support provides dependable performance for traditional document transmission.
Installation Simplicity
Plug-and-play USB interface makes setup straightforward for most users.
Data Throughput
Limited by dial-up standards, speed is insufficient for modern web browsing.
Key Specs
Data Standards
V.92, V.90, V.34, V.32bis, V.32, V.22bis, V.22, V.23, And V.21
Data Error Control/Compression
V.44/V.42/V42bis and MNP24/5
Fax Standards
EIA578 (Class1) With V.17, V.29, V.27ter, Group3
Video Conferencing Support
V.80
DTE Interface
USB 2.0
OS Compatibility
Windows Server 2012 R2/Win 10 /Win 10 64 bit/Server 2012/Win 8/Server 2011/Win 7/Server 2008/Vista/Server 2003/XP/2000, Mac 10.4-10.12, Linux 2.4.20 Kernel or Higher
Minimum System Requirements
Intel Pentium III 600 MHz or Equivalent, 128 MB RAM, 5 MB Hard Drive Space
Condition
New Surplus Stock. Sealed OEM Packaging.
Features
- 56K dial-up connectivity
- Dedicated USB controller for processing
- Integrated voice functionality
- Supports V.92 data rates
- Broad OS compatibility
- Class 1 Fax support
- V.80 Video Conferencing support
- TAPI Compliant
What customers say
Customers highly value this external fax modem for its exceptional reliability and superior connection stability, setting it apart from lesser alternatives. It is the preferred choice for critical, niche applications requiring dependable dial up access or legacy equipment interfacing. Reviewers consistently praise its robust design for maintaining maximum connection speeds smoothly. While the USB setup is convenient, driver searches for the newest operating systems can sometimes take effort. Despite a higher price, users agree the premium is justified by the near guaranteed performance and hardware longevity. This modem is seen as a crucial, dependable tool for specialized needs where connection quality cannot be compromised.
Know before you buy
The USR5637 is designed for broad compatibility and is generally recognized by Windows, Mac, and Linux systems as a standard USB modem device. While most modern operating systems will detect it automatically, you may need to ensure your system is updated to support the specific USB controller.
Yes, this modem features integrated voice functionality and is TAPI compliant. This allows it to support voice-related features, provided you are using software that supports TAPI and the modem's voice capabilities.
The integrated controller handles the data processing tasks internally, which prevents the modem from relying on your computer's CPU. This ensures that your system resources remain free for other applications, providing a more stable and efficient connection.
The modem supports the V.80 standard, which was historically used for H.324 video conferencing over dial-up lines. Please note that modern video conferencing platforms require high-speed broadband and will not function over a 56K dial-up connection.
New surplus stock refers to authentic, unused product that has been held in inventory. These units arrive in their original, sealed OEM packaging and are functionally identical to a new retail unit.
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$75