A tale of 3 USB Testers: Ruideng UM25C, UM34C and a fake

Ruideng makes a number of well known USB Testers. I have reviewed their UM34C before. This video started as a review and tear-down of the Ruideng UM25C but when I saw the UT25 which is a poor copy of a UM25 dressed up to look as different as possible, I could not resist. And so this video became a review and comparison of 3 testers and quite a bit longer than intended.

If you are only interested in a review of the (genuine) UM25C, I made a shorter version that skips over all the other stuff. The shorter video is here: https://youtu.be/zKNkbaFRtu4

My original review of the UM34C: https://youtu.be/3yhHX96h-jg ... https://www.youtube.com/watch?v=wuASLuor9Fs