Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Non-standard mouse4 and mouse5

I don't know if there is a standard position for the mouse4 and mouse5 buttons on the left side, but this mouse had the buttons backwards from every other mouse that I've used (Microsoft Intellimouse Explorer, unknown Logitech 5 button wireless mouse).The mouse itself worked ok. It seemed a little jumpy, but I think all wireless mice are like this.