PortaPow USB Power Blocker Nur Daten, kein Laden

This is a USB-A male to female adaptor which has the D+, D- and 0V connected but the 5V disconnected, so power cannot pass through. Useful for specialist applications such as some 3D printers where providing power results in undesirable effects Note a power blocker is not compatible with smartphones, tablets and many other devices. Please read the reviews to see situations where it does and does not work. This is NOT a data blocker, see PortaPow's other products if that is what you need Supports USB 2.0 data transfer