Keyspan USA-28 Driver Download (Official)

Keyspan Drivers

The USA-28 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 version of "KeyspanUSA28v21Installer.sea.bin" is rated (1 out of 5 stars) based on 222 downloads and 5 reviews. The total disk space used for this update is 575.7 KB.

5 Ratings

Supported Models




Supported Operating Systems


File Name

Additional Notes

Platform: Mac OS 8.6 - 9.x

Info: This file contains version 2.1 of the Keyspan USB Serial Adapter (USA-28) installer.

Release Notes:

* improves overall serial communications, fixes an issue with virtual memory, fixes issue with multiple adapters on different USB buses having the same port names, Keyspan Manager application is now accessible via the Keyspan Assistant control panel, changed Keyspan Assistant and Manager appearance.

Uploaded By

Alagappan (DG Staff Member) on 9-Apr-2005

How to Update USA-28 Device Drivers

Step 1 - Download Your Driver

To get the USA-28 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 USA-28 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

  1. Open a tool called Device Manager.

  2. Use Device Manager to put the new driver on your computer.

  3. Turn your computer off.

  4. 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.

This website is not affiliated with Keyspan. All company names/logos are properties of their owners.
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