Review on Transcend 128GB SDXC Class 10 UHS-1 Flash 💾 Memory Card - High-Speed Data Transfer up to 90MB/s (TS128GSDXC10U1) by Maurice Strawther

I've had two 64GB versions of this card for a few years. They regularly cause problems in both my Canon 5d mk IV and my assistant's mk IV and mk III. When inserting, the camera says it can't access the card. Sometimes re-plugging works, sometimes you have to re-plug multiple times. Worst when the camera lost access to that card in the middle of work. Both cards show the same behavior with the cameras mentioned. Reformatting in camera, low-level formatting in camera, and reformatting on my computer make no difference. I've been using Transcend for a long time and this card is the only one I'm having trouble with so unfortunately I threw it in the trash.