A USB converter adaptor for a mobility assistive device includes a mobility assistive device connector (3), a DC-to-DC converter (4) and a USB connector (5). The mobility assistive device connector (3) includes a tubular casing (33) and two conductive pins...

Power supply equipment is provided with two power ports for simultaneously powering two electronic devices. The equipment includes low power assemblies and high power assemblies, each of which is detachably mateable to either one of the power ports. To sim...