What to do if my HID iCLASS SE U90 Card Reader isn't reading cards?
- KKyle RodriguezAug 3, 2025
If your HID Card Reader isn't reading cards, here are a few things to check: * Make sure the RF field checkbox is turned on. * Verify that the reader has the correct keys. * Ensure the reader is powered on with sufficient power. Check if the diagnostic LED is on and that the power supply has the correct output level. * Confirm that the card you are using is the correct technology for the reader.