These are for filtering the 5V USB supply voltage (EMV), they must stand the full current caused by the connected USB devices. On early USB mainboards they used through hole "ferrite beads" with very low inductivity, very low DC-resistance (0.05 Ohm) and designed for currents of 1-2A. There are …

Zerthimon wrote on 2023-05-29, 18:41: Are there any markings on L6 ? Unfortunately not. I have another motherboard that's very similar, I'll have a look on there.

Good chance, that L5 has the same value as L6 (both are parts of the filters with C182 and C191). To be sure of the values, you'll need the board schematics. Inductor is a kind of hard to measure - needs to be taken out and measured with a LCR-meter. Thanks for the information, I guess the next …

I need help, please. I was measuring the voltage of the USB pins on my ga-586tx3 and I've accidentally shorted an inductor known as L5 (please see attachments). I am wondering if anyone could tell me its purpose if know what its value is so I can replace it. Thank you in advance.