About this download

Micro Vault Virtual Expander is pre-installed Sony's unique file compression software.
This software will compress your data to virtually store about 3 times* as much data!

* 3 times as much data is an average based on actual tests performed by Sony on a sample of 14 files of various types. Already compressed files may not be able to be further compressed.


  • You can use Micro Vault Virtual Expander with Windows 7 , Windows Vista and Windows XP (SP1 or later).
  • Administrator rights are required.
  • Software compatible models: USM-LX, USM-L, USM-H, USM-JX, USM-J (pre-installed), USM-J/UM (to be downloaded).

File Info

File Name

  • Micro Vault Virtual Expander software

File Version

  • 27

File Size

  • 0.7MB

Release Date

  • 2011-08-24

System Requirements

  • Windows 7
  • Windows XP
  • Windows Vista



Download Procedure
  1. Create a folder to store the downloaded file.
  2. Save the downloaded file (VirtualExpander_v27.exe) in this folder.
  3. When the download is completed, use Windows Explorer to browse to the folder where the file is saved. Click View and click Details.
    * If the file size is the same as the download size (719 KB), the download is successful. If the size is different, please delete the file and download it again.
Installation Procedure
  1. Connect the MicroVault to the computer.
  2. Copy VirtualExpander_v27.exe into the MicroVault.
  3. Double-click the VirtualExpander_v27.exe file in the Micro Vault to start the application.
  4. There will be a message prompt. When Yes is selected, Virtual Expander will start automatically when the computer starts up. Otherwise click No.
Note: When starting this application for the first time, the VirtuaExpander  icon will not be added to the taskbar tray until you re-start the computer.