Determine USB Power Load
Determine USB Power Load: "Do your PC's USB ports supply enough electricity to power all the devices you have attached to them? Plugging too much gear into a bus-powered USB hub (one with no external power adapter) can overwhelm a USB port by demanding more than the 500 mA it can supply.
Check the power demands on any USB port in Windows XP by
right-clicking My Computer and choosing Properties,
Hardware,
Device Manager.
Double-click Universal Serial Bus controllers,
double-click the USB Root Hub entry,
choose the Power tab, and add up the amounts in the 'Power Required' column."
Check the power demands on any USB port in Windows XP by
right-clicking My Computer and choosing Properties,
Hardware,
Device Manager.
Double-click Universal Serial Bus controllers,
double-click the USB Root Hub entry,
choose the Power tab, and add up the amounts in the 'Power Required' column."
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