Both of the PowerBlock Plus units are glossy white wall power adapters with one USB port on the bottom and a pass-through AC port (the “Plus” feature) on the face. As with Griffin’s earlier car power adapter PowerJolt Plus, the new PowerBlocks are designed to add a USB port to an existing wall outlet without precluding you from connecting something else to that outlet, as well. It bears mention that the new PowerBlocks are a little…
