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.
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.
Compatible With. Enclosed with your DigiScan is a CD with our user manual, drivers. If you still need to download CHOOSE FROM THE LINKS. Buy DigiScan Ultra USB CAC Smart Card Reader (DOD Compatible). Remember to install the driver 1st (inside the cardboard part of package), once that's.
Hi Caleb,
Welcome to Microsoft Community Forums.
From the description I understand that Smart Card Reader is not working.
To assist you better I would appreciate if you could answer the following questions:
1)Have you made any changes to the hardware or software on the computer prior to the issue?
2)Do you get any error message / code?
3)What happens when you try to connect Card Reader?
Follow the steps and check,
![Scan Scan](https://www.digiscantech.com/wp-content/uploads/2016/09/C301_8-1.jpg)
Try connecting the card reader to a different USB port
Connect the card reader to a different computer and check
Method 1: Run the Hardware and Devices troubleshooter and check.
Follow the steps to run the troubleshooter:
a)Press Windows key + C on your keyboard to show the Charms bar.
b)Type Troubleshooting and click Troubleshooting under Settings.
c)Now type Hardware and Devices Troubleshooter in the search.
d)Click on Hardware troubleshooter to run the troubleshooter.
Method 2: Try uninstalling and reinstalling USB controllers from device manager and check.
a)Press Windows Key + R, type devmgmt.msc.
b)Expand the USB controllers (Smart Card Reader), click on the drivers.
c)Click on properties, click on uninstall tab.
d)Click OK.
e)Unplug the reader from your computer and reboot.
f)Restart the computer and plug the device again, let Windows reinstall the driver.
This information should help. If you need further assistance regarding Windows, please post. We will be happy to help you.