Upgrade Your USB Hub


Problems can arise with USB
hubs that are powered from a PC when gadgets plugged into them draw too
much current. This is often the case with devices fitted with USB cables that are too long or too thin, causing voltage drop. There’s no need to scrap your old USB hub, however, if you upgrade it using this little circuit and an external power supply. Just cut the 5-V power wire of the USB
cable inside the hub and solder a diode (D1) in the pass-through
direction. Now connect the 5 V wire from the external power supply to
the cathode of this diode. D1 prevents any current from the power supply
from flowing back into the PC.

Upgrade Your USB Hub

Upgrade Your USB Hub


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