USB to charge because it won't charge - Samsung - Android tablets

hiI have the galaxy tab 7when I plug it in computer by USB to charge but it won't ... http://www.ebay.com.au/itm/Charging-cable-Samsung-Galaxy-tab-10-1-8-9-7-7 -Allows- ... Yes it works with all Tabs – I am waiting for a cable for my Tab 7.7.

forums.whirlpool.net.au