I have the 7-8" version of this for my linx 8 - there's a thread about it over there.
Cracking keyboard, and it gets good reviews on Amazon (paired with the linx 7).
I can't justify buying this, but at a tenner I'm still tempted. Be quick if you want one.
Amazon at £35: http://www.amazon.co.uk/Belkin-Universal-Portable-Keyboard-Android/dp/B00CY9XHB4
ebay at a tenner: http://www.ebay.co.uk/itm/Belkin-QODE-Universal-Portable-Keyboard-Case-Black-For-7-Android-Tablets-/262240171839?hash=item3d0ebb773f&_sid=2048038