How to fix a flashing or permanently on Red cross on Gemalto Card Reader?
- EEdwin WilsonAug 13, 2025
If the red cross is flashing or permanently on, on your Gemalto Card Reader, it indicates that the reader has failed its self-test or is damaged. Try disconnecting all cables and turning the reader off. Then, plug in the PSU cable and turn it on. Once it has successfully powered up, connect the USB cable.




