1. Windows 10 Sd Card Reader Not Working
2. Mac Usb Ports Not Working
3. Business Card Reader For Mac
4. Cac Card Reader For Mac Not Working

Re: USB Card Reader Not Recognised In reply to Michael Kilpatrick • Apr 28, 2007 I think installing another OS for such a simple task is a little bit of an overreaction to what 99.9% of Mac users would feel is a non-problem.

So I've got a MBPr 2012, and recently I noticed that the SD card reader won't detect SD cards. I first noticed it on Windows and thought perhaps it was a driver issue, but then I booted into OSX and the SD cards still refuse to mount. I cleaned the slot with compressed air, reset NVRAM and SMC, and finally I did the extensive hardware tests in Apple Hardware Test - which by the way didn't find anything wrong. But the SD card slot still won't work.

What could the issue be? I have AppleCare for this Mac, but I believe it's about to expire (bought for Christmas 2012, Apple Care was for three years IIRC) and I also live in Puerto Rico, so there are no Apple Stores here. What can I do?

EDIT:

Windows 10 Sd Card Reader Not Working

Now it works!

Mac Usb Ports Not Working

I had to shove it in and out of the card reader a couple of times for it to work. Since I have a 128 GB card, I guess it just took a while to detect the entire thing. So I just waited for a couple of seconds and it showed up.

Business Card Reader For Mac

Cac Card Reader For Mac Not Working

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.