Lexar® Multi-Card 24-in-1 USB Reader

Does the Multi-Card 24-in-1 USB Reader support SDXC cards?

Yes, but before inserting the SDXC card into the reader, please make sure the operating system of your computer is compatible with SDXC cards and supports the exFAT file format.

Click here for the SD Card Associations reference guide: http://www.sdcard.org/developers/tech/sdxc/using_sdxc#cards-for-pcs

The chart below will help determine if the operating system of your computer supports the exFAT file format.

Operating System

exFAT support?

Other Suggested Updates

Windows 7



Windows Vista (SP 2)

Requires update to Service Pack 2 (SP2)


Download Service Pack 2 (with exFAT support)


Windows XP

Windows XP no longer is supported by Microsoft and the patch for Windows XP systems no longer is available.


Mac OS X

Only supported on Mac Mini released in June 2010,  iMac released in July 2010, and MacBook Air released in October 2010.

Requires Max OS X version 10.6.4 (or 5?)



Note: Lexar recommends the use of the SD Formatter tool to correctly format SDXC cards (as opposed to the native OS formatting tools). Click here to install the SD 3.0 formatter

Do I have to install a driver before using the Lexar® Multi-Card 24-in-1 USB Reader?

No, the reader has a convenient plug-and-play design and does not require a driver. If you have difficulty using the reader, please contact technical support.

What should I do if my computer can’t detect the reader?

Verify that the USB cable is properly connected into the USB port, and insert a card into the reader to see if the light flashes. If your computer still can’t detect the reader, please click on the “chat live” link at http://www.lexar.com/support or call the Lexar technical support hotline at (510) 413-1275 for further assistance.

I’m connected to a network drive and use Windows® XP operating system. Why can’t my system detect all five card slots when I click on MY COMPUTER?

 If you are using a network drive and Windows XP operating system, your computer may not be able to detect all of the slots. In order to show all reader slots, you must change the drive letter of your card slots. Please follow  instructions below to change the drive letter:

- On your desktop screen, right click on MY COMPUTER and select MANAGE

- Select DISK MANAGEMENT from the menu located on the left hand side of your screen

- Locate and select your REMOVABLE DRIVE (reader slot), then right click


- On the right side, you will see a drop-down menu with a letter.

Click on the drop-down arrow, select a new letter for your REMOVABLE DRIVE (reader slot), and click OK

Does the reader work with Windows 7 operating system?

Yes, the reader is compatible with laptops running Windows XP, Windows Vista®, and Windows 7 operating systems.

Does the reader work with Mac OS® X operating system?

Yes, the reader is compatible with Mac® systems running Mac OS 10.4 operating system and later.

What card formats does the reader support?

The reader supports 24 popular memory card formats: CompactFlash® Type I and Type II, SD™, SDHC™, miniSD™, miniSDHC™, MMC™, MMCplus™, RS-MMC™, microSD™, microSDHC™, M2™, Memory Stick™, Memory Stick (with MagicGate™), Memory Stick PRO™, Memory Stick PRO Duo™, Memory Stick Duo (with MagicGate), Memory Stick PRO Duo Mark 2, Memory Stick PRO-HG Duo™, Memory Stick PRO-HG Duo “HX”, xD-Picture Card™, xD-Picture Card Type-M, xD-Picture Card Type-M+, and xD-Picture Card Type-H.