HP shows a warning in the user manual to not plug it into a laptop .
It must be plugged into a high - power USB power adapter , such as the HP TouchPad power adapter or a newer high - current USB adapter .
HP shows a warning in the user manual to not plug HP TouchPad into a laptop .
It must be plugged into a high - power USB power adapter , such as the HP TouchPad power adapter or a newer high - current USB adapter .