Along the lines of "it's not a bug, it's a feature" an immature product is the buyer offered here, which shines through constant misfires. The problem with the adapters is probably the power-saving mode, in which the adapter enable ever, although a data stream creates. After consultation with the customer service that earned the grade 6 (no solution), I'm going to sell the adapter again. This time I will again buy Adapter without power saving function or can use this feature, which possibly but be switched off via firmware update. TP-Link never again!