Instruct: Classify Amazon reviews into positive or negative sentiment
Query: doesn't work with 4GB SD card

Just bought the Belkin USB 2.0 Multimedia Reader and Writer (product number F5U249V) and found that it doesn't read the 4GB SDcards, as some others have noted. It is also has proven to be unreliable - when a card is inserted, it doesn't necessarily recognize the card. It required unplugging the mini USB cable and plugging it back in. A shame, Belkin products used to be very reliable. I will be taking this Belkin product back.