I have an external 2.5" USB HD (laptop size) with a Hitachi 30G in it.

When plugged into this one machine, the drive busy light stays on permanently and the drive just makes a quiet but continuous clicking noise. When plugged into other machines, (3 others tried so far), it works perfectly, so I can rule out the drive being the cause of the problem.

The machine it doesn't work on has a brand new motherboard with USB 2 ports and when you connect an external ADSL modem or a mobile phone to ANY of the USB ports they work perfectly. So, the ports are working.

Am I correct in thinking this could be a voltage problem with the USB ports?

If so, can anyone suggest a solution please?

Many thanks...

Barrie