Ineffective USB Connection

**drey** · March 5th, 2008 01:14 AM

My computer says power is limited blah blah blah, but sometimes the device does work.

Help please...

**russpogi** · March 5th, 2008 03:12 AM

Ano nakalagay pre?

**ghosthunter** · March 5th, 2008 08:34 AM

It could be the USB port itself. If your device needs USB 2.0 and your port is only 1.0 or 1.1 ... you need to either buy a PCI card with USB 2.0 ports or upgrade your motherboard.

**Jun aka Pekto** · March 5th, 2008 02:30 PM

I sometimes get that message with some Dell laptops whenever I hook up my unpowered 2.5" external usb2 hard drive. I just ignore it and continue which seemed to have no ill effects on the hard drive.

**drey** · March 5th, 2008 07:56 PM

Okay naman before... I think it's software related though...

**StraightSix** · March 5th, 2008 08:22 PM

A USB port can supply 5 Volts DC to peripherals. However, the current is very limited ... initially only 100mA (0.1 Ampere) and upon demand, up to 500mA (1/2 Ampere). As you can see, it can only supply a maximum of 2.5 watts.

If your peripheral is connected through a hub, try plugging it directly to the computer's USB port.