SOLUTION 1 - Verify if minimum system requirement is met.
SanDisk card readers support Windows Vista, Windows XP SP2 and Windows 2000 SP4, Windows 7.
NOTE: No additional drivers need to be downloaded for the card readers as they are native to the above mentioned supported operating systems.
For Mac users, seeTroubleshooting USB device on Mac
SOLUTION 2 - Verify the reader's status under Device Manager.
STEP 1 - Connect the reader to the PC
NOTE: It is recommended that you plug your card reader to the back USB port on your PC to ensure that there is enough power from the USB port for the card reader to be detected properly.
STEP 2 - Check under Device Manager
1. Right-click My Computer.
2. Select Manage.
3. On the left pane, click Device Manager.
NOTE: The card reader will appear in two places: Disk Drives and Universal Serial Bus controls as USB Mass Storage. If there is a yellow exclamation point (!) or question mark (?) next to the device, try to refresh the drivers.
STEP 3 - Refresh the drivers
1. Right-click the entry with the error mark, select Uninstall.
2. On the top menu, click Action, and then click Scan for hardware changes.
STEP 4 - Verify if the reader is detected
1. Double-click My Computer.
2. Look for the card reader under Devices with removable storage.
SOLUTION 3 - Try other USB ports.
A yellow exclamation point (!) under Device Manager usually means that the device is not receiving enough power. If the reader is not receiving ample amount of power from the USB port, it may not function properly.
SOLUTION 4 - Change the drive letters
NOTE: The SDDR-89, SDDR-189, SDDR-289 reader should show 4 drive letters underMy Computer.
Saicoo Cac Card Reader
Saicoo Cac Reader Not Working
As the above table shows, the Saicoo V1 has been chosen as the best desk based CAC reader for Mac. This is our pick due to the fact that the Saicoo V1 has a good review score over a. Update your system. (10.6.5 is the latest for Snow Leopard) Step 2: Plug in your CAC Reader to an available USB Port. Step 3: Click the Apple Icon in the upper left corner of your desktop and select 'About This Mac'. Saicoo smart card reader military usb common access cac compatible with mac os product details color:cac v1 - companion for your life is an easy-to-install device suited all contact operations like online-banking or digital signature applications.