Cypress Semiconductor Mass Storage Driver Download (Official)

The Mass Storage is a device manufactured by Cypress Semiconductor. This version of "" has been downloaded 556 times with a user rating of 5 out of 5 stars, based on 11 reviews. Compatibility for this driver update includes PCs running Windows operating systems such as Windows Vista and Windows XP. The total disk space used for this update is 1.3 MB.

11 Ratings (see all reviews)

Supported Models

Mass Storage

Storage Adapter Bridge Module (CY)

USB Flash Disk (CY)

USB Storage Adapter AT2 (CY)

USB Storage Adapter FX (CY)

USB Storage Adapter FX2 (CY)

USB Storage Adapter ISD-200 (CY)

USB Storage Adapter ISD-300 (CY)


Cypress Semiconductor

Supported Operating Systems

Windows Vista, Windows Vista (64 bit), Windows 2003, Windows 2003 (64 bit), Windows XP, Windows XP (64 bit), Windows 2000, Windows NT4, Windows NT3.51, Windows ME, Windows 98SE, Windows 98, Windows 95, Windows 3.1

File Name



Additional Notes

Mass Storage

Windows Mass Storage Driver v.6.01

Bus Driver File

Uploaded By

Purushothaman (DG Staff Member) on 18-Apr-2006

Most Helpful Reviews

4 of 5 people found the following review helpful:

31 Oct 2006

Installation:  out of 5
Stability:  out of 5
Compatibility:  out of 5
"Excellent! It works for me under Win98"
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See all Cypress Semiconductor Mass Storage ratings and reviews

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
CustomizingVID_PID.pdf 968.1 KB 17 Jul 2002
Release Notes.pdf 27.3 KB 11 Aug 2003
Software License Agreement Rev 3.1.pdf 89.3 KB 17 Jul 2002
cy_UI16.DLL 11.4 KB 21 Apr 2003
cy_X00.sys 37.0 KB 21 Apr 2003
cy_bg.exe 118.8 KB 21 Apr 2003
cy_coins.dll 3.1 KB 21 Apr 2003
cy_fx_at.inf 5.2 KB 21 Apr 2003
cy_fx_at.sys 32.6 KB 21 Apr 2003
cy_iosmp.sys 8.7 KB 21 Apr 2003
cy_iostb.inf 817 bytes 21 Apr 2003
cy_iostb.pdr 4.7 KB 21 Apr 2003
cy_ni9X.exe 282.6 KB 21 Apr 2003
cy_nint.exe 282.6 KB 21 Apr 2003
cy_sl11r.inf 4.0 KB 21 Apr 2003
cy_sl11r.sys 31.6 KB 21 Apr 2003
cy_ui32.DLL 12.4 KB 21 Apr 2003
cy_un.exe 98.4 KB 21 Apr 2003
cy_x00.inf 5.0 KB 21 Apr 2003

How to Update Mass Storage Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the Mass Storage 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 Cypress Semiconductor Mass Storage 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 Driver Update Utility for Cypress Semiconductor Mass Storage. It is a software utility which automatically finds and downloads the right driver.

Step 2 - Install Your Driver

Once you have downloaded your new driver, you'll need to install it. In Windows, use a built-in utility called Device Manager, which allows you to see all of the devices recognized by your system, and the drivers associated with them.

How to Open Device Manager

  • In Windows 11, Windows 10 & Windows 8.1, right-click the Start menu and select Device Manager

  • In Windows 8, swipe up from the bottom, or right-click anywhere on the desktop and choose "All Apps" -> swipe or scroll right and choose "Control Panel" (under Windows System section) -> Hardware and Sound -> Device Manager

  • In Windows 7, click Start -> Control Panel -> Hardware and Sound -> Device Manager

  • In Windows Vista, click Start -> Control Panel -> System and Maintenance -> Device Manager

  • In Windows XP, click Start -> Control Panel -> Performance and Maintenance -> System -> Hardware tab -> Device Manager button

How to Install a driver from Device Manager

  1. Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.

  2. Select the Driver tab.

  3. Click the Update Driver button and follow the instructions.

In most cases, you will need to reboot your computer in order for the driver update to take effect.

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 Cypress Semiconductor. All company names/logos are properties of their owners.
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