I got the Hitachi 320GB, 2.5" external deal from Newegg for $25.
It doesn't take a power brick.
It uses two USB connections for power/data.
It gets enough power on my Lenovo 3000 N100.
It does NOT get enough power on my desktop or my X31 Thinkpad.
It DOES get enough power on my Rosewill USB Hub.
Using the Rosewill USB hub's power adapter withOUT the hub doesn't give it enough power.
I'm running Ubuntu on my Lenovo.
I'm thinking the drive goes to sleep when using my Lenovo. If I haven't dragged files to it for a long time, when I attempt to do so, the open window viewing files on the dirve closes and the drive beeps. A short time later the drive window reopens and is active.
One or two times it would NOT wake-up. Disconnecting it and reconnecting it worked one of those two times. The other time I had to reboot.
I emailed Hitachi's tech support about the power problems before I experienced the "sleep" problem. The said the drive was defective and told me to RA it. I think they're wrong. I think the tech just took the easy way out.
I've since purchased a Dane Electric 500GB external that never disappears, always wakes up and always gets enough power.
What do you think? Is the Hitachi defective or is it just poor engineering or software on Hitachi's part? Many on Newegg's site have mentioned power problems. Hitachi has a governor which restricts the power that reaches the drive. Supposedly by-passing it with a usb to barrel type power cord works. Hower, plugging the cables that come with it into two USB2.0 ports or into a powered hub is supposed to work. No one mentioned the sleep problems. Not to mention my power problems are odd. Could the Rosewill power cord be proprietary that it alone wont work but when connected to their hub it does pass enough power through to the Hitachi drive?
The Dane Electric seems to be more rock solid, dependable and faster. I think someone said the Hitachi had a WD Blue HDD inside but that seems odd since it's made by Hitachi.
If this was mine I would go through the RMA process. The reviews on newegg suggest a problem and Hitachi seems to recognize it so why not give them a chance to make it right? Since this works on some of your computers back up the data and send it in. You have nothing to loose. Its more than likely a problem with the controller board in the enclosure than a problem with the drive itself.
It is extremely unlikely that it has a Western Digital drive in it since Hitachi is a very large producer of 2.5" HD's. It is more likely that your Dane drive had a Hitachi drive in it or WD. BTW personally I would buy the Hitachi over the Dane every day.
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