Instruct: Classify the given review as either positive or negative.
Query: Decent performance; not what I wanted

I've used the MacAlly 100F since 2005 -- the firewire only version of this product. I've had great experiences with it and enjoy the performance. No noisy fans, a solid aluminum enclosure to conduct heat away, and the drives power down when not in use. I can leave the device on 24/7 and never worry about it. When the OS needs something, the drives spin up and deliver and spin down later.This 100A USB only product will not spin down the drive. This puts the hard disc confined in a small place to bake itself meaning the user now needs to worry about either reduced lifetime or manually unmounting and powering down the device when not in use and again powering it up before using it. I had hoped to have all the advantages of the 100F except on my NAS (Time Capsule, which only has USB). Alas, this is not the device I hoped for.