Leonardo nothing happends then connected

I just got my Arduino Leonardo from ebay

http://www.ebay.com/itm/280962986469?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

Nothing happends then i connect it to the USB port, it's not found in device manager.

On the board 'ON' and 'L' lights up. I tried pressing reset serveral times.

I tried it on my laptop and still nothing happends except GREEN ON and Yellow L.

Thank you all for the replies.

The Ebay seller is shipping a new unit as it's broken.