Microcontroller-based circuits for testing cables, sometimes in conjunction with a PC, are easy to use and very flexible. For the hobbyist, however, the complication of such devices is not justified.

There’s no shame in admitting you’ve been burned by a cheapo USB cable — ever since some bean counter realized there was a few cents to be saved by producing “power only” USB cables, no hardware ...

A versatile cable tester can identify miswired or non-functional audio, USB, HDMI, and RJ45 cables in seconds, preventing costly mistakes for home or professional setups. This device lights up to show ...

Not all HDMI cables are equal - use HDMI 2.0+ (preferably 2.1) for modern devices. Look for 'Ultra High Speed' or 48Gbps/4K@120 on cable/packaging, or test with your device's 4K120 setting. Use HDMI 2 ...