I've only had my pi for a few days, but already I clumsily broke it. I went to plug it in but my thumb was in the wrong place so when I tried to force the charger into the micro-usb socket, this small cylindrical part snapped off. It has 2E 220 16H labeled on the top of it. I'm not anywhere close to being an expert with computers (I got the raspberry pi, in fact, to help me learn) so I'm not sure what this part does.
Is this part vital? Can the pi operate without it? Or is there an easy way to fix it?
If not, do the retailers have warranties or something to replace the pi?