Tenda Nova MW3 power adapter

Hi, I seem to have misplaced the power adapter for my Tenda Nova MW3 cube during house move. Anyone know where I can buy a replacement from?

I found some power adapters on eBay but not sure what size tip fits the MW3. If anyone has a MW3 and a Vernier Caliper, would you be kind enough to measure the tip barrel and share the size?