Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Ceased to function as an SD memory card

The combination SD / USB made it very convenient to take pictures and easy to transfer them to my computer.But the SD card feature stopped working after fewer than three weeks, and it was no longer recognized by any SD device I tried it with. Some other reviews suggest this could be a common issue with OCZ flash cards in general.Its USB port still works, so the card was salvageable as an ordinary USB flash storage device. I've tried a different brand combo SD / USB card (Sandisk) which has been much more dependable.