Ethernet cable testers are dime a dozen, but none of them are as elegant and multimeter-friendly as this tester from our Hackaday.io regular, [Bharbour]. An Ethernet cable has 8 wires, and the 9 ...

Worry not, [Spencer Maroukis] has got you covered with the USB Sleuth Cable Tester! The cable tester is a beautiful black circular PCB, with USB ports of nearly every type on the edges.

Testing my internet speeds with an Ethernet cable did help me pinpoint the root cause of my slow connection. Based on the drastic difference between the Wi-Fi and Ethernet speed tests, I ...