I'm still really new to this astronomy world, what does USB 5V/1.5A refer to?
Many devices today don't have a specific power connection but instead draw their power through a USB connection. The USB standard supplies 5v on the USB connector. Older USB 2 ports supply 5 v and .5 of an amp, newer USB 3 and USB type C ports can usually supply the higher amperage mentioned, and these are sometimes referred to as USB charging ports.
All the larger Celestron mounts require 12v power sources (they then break down that voltage into 5 and 3.3v internally for the various requirements ,,, but the motors driving the mount still require 12v). The 12v connection is a 2.1 x 5.5mm barrel connector and socket.
Edited by mclewis1, 03 August 2020 - 09:43 AM.