[Thinkpad] High Power USB Port

David Ross ross at math.hawaii.edu
Sun Feb 4 17:43:11 CST 2007


> Is a powered USB hub as good of a solution as an AC adapter for the
drive?

Possibly better.

I have an external USB CDRW that works fine (though speed-limited) off
the built-in USB1.1 ports on my X30 with no extra power.  When I tried
it on a PC-Card USB2 adapter (which claimed to be able to deliver 500ma
in a "high power" slot) it wouldn't work, even when I tried running
power cables from the drive to one of the built in USB ports (I also
tried leeching power off the PS2 port).  However, it works perfectly off
a $10 powered hub (Belkin).

David




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