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USER MANUAL MSACUS1A SONY
Memory Stick Reader/Writer
Operating Instructions US
Before operating the unit, please read this instructions thoroughly, and retain it for future reference.
For the customers in U.S.A.
If you have any questions about this product, you may call: Sony Customer Information Center 1-800-222-SONY(7669) or write to: Sony Customer Information Center 1 Sony Drive, Mail Drop #T1-11, Park Ridge, NJ 07656
Declaration of Conformity
Trade Name : SONY
Model : MSAC-US1
Responsible Party : Sony Electronics Inc.
Address : 1 Sony Drive, Park Ridge, NJ, 07656 USA
Telephone number : 201-930-6972
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions.: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
CAUTION
You are cautioned that any changes or modifications not expressly approved in this manual could void your authority to operate this equipment.
Note:
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
The specified USB cable (supplied) must be used with the equipment in order to comply with the limits for a digital device pursuant to Subpart B of Part 15 of FCC Rules.
2-US
For the customers in Germany
Directive: EMC Directive 89/336/EEC.
92/31/EEC
This equipment complies with the EMC regulations when used under the following circumstances:
- Residential area
- Business district
• Light-industry district
(This equipment complies with the EMC standard regulations EN55022 Class B.)
You can connect this unit to a personal computer so that data in a “Memory Stick” can be transferred to the personal computer at high speed. You can also use a “Memory Stick” as a removable disk.
This manual describes how to connect this unit, how to install the driver, how to use and customer service.
Notes
- We recommend backing up valuable data.
- The contents of data cannot be compensated if recording or playing back is not made due to malfunctions such as a “Memory Stick” error.
- Do not touch the terminals on the “Memory Stick” with your fingers or metal objects.
- To prevent recording or deletion of data on “Memory Stick”s set the “Memory Stick” write-protect switch to “Lock”.
- The communications state is sometimes not restored even if your personal computer is restored from a suspend state or sleep state.
- Do not optimize "Memory Stick"s.
- Do not compress the data on "Memory Stick"s.
- Operation is not guaranteed when two or more USB devices are connected to a single personal computer.
- Make sure that the specified USB cable is connected to the USB jack on the personal computer. Operations are not guaranteed when the USB cable is connected to other jacks such as on the keyboard or the hub.
"Memory Stick" and Memory Stick are trademarks of Sony Corporation.
Microsoft® and Windows® are registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.
Macintosh, iMac and Mac OS are trademarks of Apple Computer, Inc.
MMX® and Pentium® are registered trademarks or trademarks of Intel Corporation.
All other company names and product names mentioned here may be the trademarks or registered trademarks of their respective companies.
About Formatting "Memory Stick"s
When “Memory Stick”s are shipped from the factory, they are already formatted to a special standard format. When you format “Memory Stick”s, we recommend formatting them on the device you are using so that they are compatible when used on “Memory Stick”-compatible device.
Cautions When Formatting "Memory Stick"s on a Personal Computer
Pay attention to the following points when formatting “Memory Stick”s on the personal computer, for example, that you are using.
- Operation of “Memory Stick”s formatted on Windows machines is not guaranteed on “Memory Stick”-compatible device. To use a “Memory Stick” that has been formatted on a Windows machine, the “Memory Stick” must be reformatted on “Memory Stick”-compatible device. Note, that, in this case all data stored on the “Memory Stick” will be lost.
- "Memory Stick" formatted on a Macintosh sometimes cannot be used on "Memory Stick"-compatible device. Do not format "Memory Stick" on the Macintosh.
Table of Contents
Parts identification 6
Before You Begin
Checking the accessories 7
How to use
For Windows 8
For Macintosh 12
For users of SONY Digital Handycam and Cyber-shot 14
Additional Information
Troubleshooting 15
Specifications 16
Recommended connections 17
Parts identification

flowchart
graph LR
A["USB jack"] --> B["Connector A Connector B"]
B --> C["Access lamp"]
- Connector A
Insert the connector (A) on the specified USB cable into the USB jack on the personal computer (into any USB jack on the personal computer if the personal computer has more than one USB jack).
- Connector B
Insert the connector (B) on the specified USB cable into the USB jack on this unit firmly.
Notes
- The access lamp lights when you access data on "Memory Stick".
When the access lamp is lit, never remove the "Memory Stick", turn off the power of your personal computer or pull out the USB cable. Doing so might damage the data in "Memory Stick." - When disconnecting this unit from the personal computer, do not hold it by its cable; hold it by its connector.
Checking the accessories
Make sure that you have all the accessories below. If some of the accessories are missing, contact the store or purchase of a Sony dealer or local authorized Sony service facility.
• Memory Stick Reader/Writer (1)

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3D rendering of a curved, rectangular electronic device with a small hole at the bottom (no text or symbols)- Specified USB cable (1)

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Pure electrical circuit lines without any symbols• CD-ROM (SPVD-003 USB driver) (1) (for Windows/Macintosh)
- Manual (1)
- WARRANTY CARD (1)
For Windows
First, you must install the USB driver software in the package on the personal computer you are using. Follow the procedure below to install the USB driver software.
Installation
The screens shown in the following procedure are examples. Actual screens differ according to the OS.
- For Windows Me -
You can use this unit without using the USB driver (supplied).
Follow the procedure below.
Insert "Memory Stick" into the unit, and connect the USB jack on the personal computer to the USB jack on this unit using the specified USB cable (supplied).
The “Memory Stick” driver software installation starts automatically.
- For Windows 98/98SE/2000 -
If you are using Windows 2000, you must log in using administrator's privileges.
1 Turn on your machine to start up Windows, and insert the USB driver software CD-ROM (supplied) into the CD-ROM drive.
2 Open "My Computer."
3 Open the CD-ROM drive (Sony USB Driver (ex: [E:]).

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My Computer File Edit View Favorites Tools 31% Floppy (A) LocalDisk (C) Sony USB Driver (D)4 Start up SETUP.EXE.

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Sony USB Driver (D:) File Edit View Favorites Tools SETUP.JIME SOMSYS.DAT SETUP.EXE5 Click "Next."
This starts installation of the USB driver.
Follow the on-screen instructions until the end to install the USB driver software.

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InstallShield Wizard Welcome to the InstallShield Wizard for Sony USB Driver The InstallShield® Wizard will install Sony USB Drivers on you computer. To continue click Next. OK Next > Cancel6 After the USB driver software has been installed, reboot your personal computer.
Follow the on-screen instructions to reboot your personal computer.

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USSETUP You must restart your computer before the new settings will take effect. Do you want to restart your computer now? Yes No7 After your personal computer has rebooted, remove the CD-ROM.
8 Insert "Memory Stick" (optional) into the unit, and connect the USB jack on the personal computer to the USB jack on this unit using the specified USB cable (supplied).
The "Memory Stick" driver software installation starts automatically.
9 The icon of the newly identified driver "Removable disk" (ex: [E:]) is displayed in the "My Computer" window, and installation of the "Memory Stick" driver ends.
* Note that addition of the removable disk takes a while.
![SONY MSACUS1A - The icon of the newly identified driver "Removable disk" (ex: [E:]) is displayed in the "My Computer" window, and installation of the "Memory Stick" driver ends. - 1](/content/2026/03/528685/images/597d3c2888f755754264b8cacaf39ee954ded6ce2eb6665183f88c614e6c9ebc.jpg)
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My Computer File Edit View Favorites Tools Help SY6 Floppy (A) Local Disk (C) Sorry USB Driver (D) Removable Disk (E)Note
When you install the "Memory Stick" driver software, a message which is not described in this manual may appear on the screen. If this happens, follow the on-screen instruction.
For Windows (continued)
How to use
When you turn on your personal computer, make sure that the "Memory Stick" is not in this unit.
If the "Memory Stick" is in this unit, you may not be able to start up your personal computer.
In this case, reboot your personal computer after removing the "Memory Stick" from this unit.
Insert "Memory Stick" into the unit, and open "Explorer" or "My
Computer."
Removable disk is newly set up so that you can access data on "Memory Stick."

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Desktop My Computer 3½ Floppy (A:) (C:) (D:) Removable Disk (G:) Dcim 100msdcf Mssony Imcif100 Moml0001 Momlv100 Folder containing still image data Folder containing E-mail data Folder containing video data Folder containing voice memo dataThe screen shown above is an example. Actual screen may differ according to the OS.
This screen shows a window opened by Explorer.
Removing "Memory Stick" or disconnect this unit
When the access lamp is lit, never remove the "Memory Stick", turn off the power of your personal computer or disconnect the connector. Doing so might damage the data in "Memory Stick."
- For Windows 98/98SE -
1 Close softwares such as Explorer running for this unit.
2 Make sure that the access lamp is not lit, then remove the "Memory Stick" or disconnect this unit.
- For Windows 2000/Me -
1 Close softwares such as Explorer running for this unit.
2 Click the "Disconnect or remove hardware" icon in the task bar.

10:44
3 Click "Stop Sony Peripheral-Drive (ex: [E:])" or "Stop USB Disk-Drive (ex: [F:])".
Stop Sony Peripheral - Drive(E:)

5:46 PM
Stop USB Disk - Drive(F:)

12:00 PM
4 Click "OK", then remove the "Memory Stick" or disconnect this unit.

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Safe To Remove Hardware The 'Sony Peripheral' device can now be safely received from the system. OK
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Safe To Remove Hardware The USB Disk P: device can now be safely removed from the system. OKNote
If you remove the "Memory Stick" or disconnect this unit improperly, the warning messages appear on the screen.
In this case, the "Memory Stick" data may be corrupted.
Follow the procedures at all times when you remove the "Memory Stick" or disconnect this unit.
For Macintosh
First, you must install the USB driver software in the package on the personal computer you are using. Follow the procedure below to install the USB driver software.
Installation
1 Turn on your Macintosh to start up the Mac OS.
2 Insert the USB driver software CD-ROM (supplied) into the CD-ROM drive.
3 Connect the USB jack on the personal computer to the USB jack on this unit using the specified USB cable (supplied).
4 Double-click the CD-ROM drive icon.
5 Double-click the hard disk icon containing the System Folder to open the hard disk window.
6 Drag the following two Mac driver files in the window open in step 4 onto the System Folder in the window opened in step 5. (Drag and Drop):
- Sony Peripheral USB Driver
- Sony Peripheral USB Shim
7 The message "Place files in Extensions Folder?" is displayed. Select "OK."
8 Restart your Macintosh.
How to use
Insert a "Memory Stick" after your Macintosh has started up.
When you insert "Memory Stick" into the unit, Memory Stick icon appears on the desktop.
You can access data on "Memory Stick."
* Note that displaying the Memory Stick icon takes a while.
Removing "Memory Stick"
1 Close softwares running for this unit.
2 Make sure that the access lamp is not lit.
3 Move the Memory Stick icon from the hard disk to Trash or select [Eject] from [Special] menu.
4 Remove the "Memory Stick."
Note
You may not be able to copy the whole of folder on “Memory Stick” at once to the hard disk on the Macintosh. In this case, open the folder first and copy the contents in the folder.
For users of SONY Digital Handycam and Cyber-shot
You can view or capture data on “Memory Stick” on a personal computer by connecting this unit to a personal computer using the specified USB cable (supplied) on which the USB driver software has been installed. For details on how to use SONY Digital Handycam or Cyber-shot, refer to the manual for your Digital Handycam or Cyber-shot.
"Memory Stick" data made on a SONY Digital Handycam or Cyber-shot is stored to the following file names in the following folders.

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Desktop My Computer 3½ Floppy (A:) (C:) (D:) Removable Disk (G:) Dcim 100msdcf Mssony Imcif100 Moml0001 Momlv100 Folder containing still image data Folder containing E-mail data Folder containing video data Folder containing voice memo dataActual screens differ according to the OS.
| Recording mode | Folder name | Folder name | File name (Example) |
| Still picture | Dcim | 100msdcf | Dsc00001.jpg |
| Moving picture | Mssony | Moml0001 | Mov00001.mpg |
| VOICE | Mssony | Momlv100 | Dsc00001.mpg |
| Mssony | Imcif100 | Dsc00001.jpg |
Note
The folder names and file names vary according to the equipment you are using. Refer to the user's manual for the equipment you are using.
Troubleshooting
| Symptom | Cause/Solution |
| You cannot install the USB driver software. | ·The specified USB cable is not correctly connected.→ Connect correctly. (page 17)·Device other than this unit is connected to the USB jack on the personal computer.→ Disconnect or turn off the USB devices except this unit.·“Memory Stick” is not in the unit.→ Insert “Memory Stick” into the unit. |
| You cannot start up your computer.(Windows) | ·You have started up your computer with a “Memory Stick” inserted in this unit.→ Remove the “Memory Stick” from the unit, and then start up your computer again. |
| Memory Stick icon does not appear in Explorer or My Computer.(Windows) | ·The connection between the personal computer and the unit is not correct.→ Connect the cable correctly. (page 17)·“Memory Stick” is not in the unit.→ Insert “Memory Stick” into the unit. |
| Memory Stick icon does not appear.(Macintosh) | ·The connection between the personal computer and the unit is not correct.→ Connect the cable correctly. (page 17)·“Memory Stick” is not in the unit.→ Insert “Memory Stick” into the unit. |
Specifications
Memory Stick Reader/Writer
Interface: USB interface
Baud rate: Max. 12 Mbps
Required system
Recommended Windows environment
OS: Microsoft® Windows® 98, Windows® 98SE, Windows® Me, Windows® 2000 Professional (standard installation)
Operation after upgrading from the above OSs is not guaranteed.
CPU: MMX® Pentium® 200 MHz or more
* The USB jack must be installed as standard.
Recommended Macintosh environment
OS: Mac OS 8.5.1/8.6/9.0 (standard installation)
“iBook”, “Power Mac G4”, “CD-ROM drive slot-loading type iMac” pre-installed with Mac OS 8.6 before they leave the factory must be upgraded to Mac OS 9.0
* The USB jack must be installed as standard.
Operating voltage 5 V DC (supplied from USB cable)
Current consumption Action Max. 100 mA
Standby Max. 500 μA
External dimensions
Operating environment 0 °C to 40 °C (32 °F to 104 °F) (condensation not allowed)
Recommended connections
Operation when connected as follows has been confirmed.
1 When this unit is connected to the USB jack on the personal computer, and nothing is connected to the other USB jack:

2 When a USB keyboard is connected to the USB jack on a personal computer on which a USB keyboard and mouse are equipped as standard, and this unit is connected to the other USB jack by the specified USB cable:

flowchart
graph LR
A["Computer"] -->|USB cable| B["Server"]
B -->|USB cable| C["Desktop"]
C -->|USB cable| D["Keyboard"]
D -->|USB cable| E["Mouse"]
Notes
- Operation is not guaranteed when two or more USB devices are connected to a single personal computer, depending on the USB devices.
- Make sure that the specified USB cable is connected to the USB jack on the personal computer. Operations are not guaranteed when the USB cable is connected to other jacks such as on the keyboard or the hub.
• Operation on all personal computers in the recommended environment is not guaranteed.
Français
natural_image
3D rendering of a curved, rectangular electronic device with a small hole at the bottom (no text or symbols)natural_image
Pure electrical circuit lines without any symbols• CD-ROM (pilote USB SPVD-003) (1) (pour Windows/Macintosh)
- Mode d'emploi (1)
• CARTE DE GARANTIE (1)
Windows
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InstallShield Wizard Welcome to the InstallShield Wizard for Sony USB Driver The InstallShield® Wizard will install Sony USB Driver on you computer. To continue, click Next. OK Next > Canceltext_image
USBSETUP You must restart your computer before the new settings will take effect. Do you want to restart your computer now? Yes Notext_image
My Computer File Edit View Favorites Tools Help 376 Floppy (A) Local Disk (C) Sony USB Driver (D) Removable Disk (E)Remarque
3 Cliquez sur "Stop Sony Peripheral-Drive (ex: [E:])" ou "Stop USB Disk-Drive (ex: [F:])".

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Stop Sony Peripheral - Drive(E:) 5:46 PMStop USB Disk - Drive(F:)

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Safe To Remove Hardware The "Sorry Peripheral" device can now be safely removed from the system. OK
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Safe To Remove Hardware The USB Disk F: device can now be safely removed from the system. OKRemarque
If you have any questions/comments related to this product, please visit our Customer Support website at http://www.sony.com/service (If you do not have internet access, please call 1-800-22 SONY.)