For my vacation I wanted to buy one as comprehensively usable travel adapter. and have decided model for Skross Proplus USB. The device is also performed quite wertig, but severely limited the possible uses. If in the Beschreiibung of the use for two- and three-pin connectors is mentioned, this is just wrong. Since the 3rd pin is not retractable, the use is impossible with two-pole sockets in a rule !!! By misleading product description you can buy at a high price something that is not or only very limited use can. A clear case of rip-off !!