Keyspan US-4A Driver Download (Official)
The US-4A is a USB device manufactured by Keyspan. This driver can help resolve issues like USB device not recognized, "Disk Not Formatted" errors, or if your device randomly ejects or stops working. This driver - "KeyspanUS4Av121.sitx.bin" - has been downloaded 25 times and is rated 5 out of 5 stars based on 6 reviews. The total disk space used for this update is 1.0 MB.
Supported Models
US-4A
Manufacturers
Supported Operating Systems
Mac OSX
File Name
KeyspanUS4Av121.sitx.bin (1.0 MB)
Additional Notes
Platform: Mac OS X 10.2.8 - 10.3.x
Info: This file contains version 1.2.1 of the Keyspan USB Server installer.
Release Notes:
|| NEW IN 1.2 || * Mac: AutoConnect added Mac/Windows: improved USB communications || NEW IN 1.1 || * Mac/Windows: improved communication interoperability between zeroconfig / static IP computers * Mac/Windows: UDP broadcast every 5 sec (down from x) * Mac/Windows: Added 'welcome' screen (appears once)
Uploaded By
Alagappan (DG Staff Member) on 9-Apr-2005
Related Driver Updates
How to Update US-4A Device Drivers
Step 1 - Download Your Driver
To get the US-4A driver, click the green download button above. After you complete your download, move on to Step 2.
If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter Keyspan US-4A into the search box above and then submit. In the results, choose the best match for your PC and operating system.
Tech Tip: If you are having trouble deciding which is the right driver, try the Keyspan Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.
To find the newest driver, you may need to visit the Keyspan website. Most major device manufacturers update their drivers regularly.
Step 2 - Install Your Driver
Open a tool called Device Manager.
Use Device Manager to put the new driver on your computer.
Turn your computer off.
Turn your computer back on.
Now your new driver is ready!
Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.
For more help, visit our Driver Support Page for step-by-step videos on how to install drivers for every file type.