Applicable Models

This information is for the following models:
  • MSAC-EX1

About this download

This utility installs the Sony Memory Stick Duo ExpressCard Adaptor driver required for below Operating Systems.

Supported Memory Stick:

  • Memory Stick Duo (Without MagicGate)
  • Memory Stick Duo (With MagicGate)
  • MagicGate Memory Stick Duo
  • Memory Stick PRO Duo
  • Memory Stick PRO-HG Duo
  • Memory Stick Micro(M2) Using with M2 adaptor, MSAC-MMD

System Requirement 

Supported Operating System:

  • Windows® XP (Service Pack 3 or later)
  • Windows® Vista (Service Pack 1 or later)
  • Windows® 7
  • Macintosh Operating System X v.10.4 (10.4.9 or later)

    Note: Please note that the original Device driver provided on the CD-ROM bundled with your device is not compatible with Windows 7.


Other devices:
ExpressCard slot (standard installation), CD-ROM drive

Available Files

MSAC-EX1 Device Driver for Windows
File Name: MSAC_EX1_Driver_Installer_101.exe
Download size: 4,611,208 KB

MSAC-EX1 Device Driver for Macintosh
File Name: MSAC-EX1_Device_Driver_v1045050.dmg
Download size: 989 KB

Updated on: 20 October 2009

File Info

File Name

  • MSAC-EX1 Device Driver for Macintosh Operating System X 10.4.9 or later

File Version

  • 1.04505

File Size

  • 0.96MB

Release Date

  • 2009-10-21

System Requirements

  • Mac OS
  • Windows 2000
  • Windows Vista
  • Windows XP




  • Before beginning the procedure below, ensure that the MSAC-EX1 adaptor is disconnected from the computer.
  • During the installation of this update, be sure that you are logged in as the Administrator or as a user with Administrative rights.
  • To ensure that no other program interferes with the installation, save all work and close all other programs. The Taskbar should be clear of applications before proceeding.

Download instruction:

  1. Download the MSAC-EX1_Device_Driver_v1045050.dmg file to a temporary or download directory (please note this directory for reference).
  2. Go to the directory where the file was downloaded and double-click the MSAC-EX1_Device_Driver.dmg file to begin the installation.
  3. Follow the instruction on-screen to complete the installation.