USB 2.0 powered hub failure

[Duncan MacGregor]

USB 2.0 hubs, it seems, may have power supplies that are too weak.

With pen drives and flash cards, a weak power supply manifests itself as  
connections that are  inconsistently maintained and unreliably established. A 
connected hard drive would sometimes only click.

Using a 5volt 2.5 amp power supply brought two of my hubs to life.
The 1 amp or unmarked supplies were useless.

It looks as though you need a power supply that provides half an amp for each 
connection on the hub


Duncan MacGregor   - Toronto -
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