It  can take up to a half hour to copy 1 gig. On the case it states 2.5″ Sata USB 2.0 certified

Also, when I copy data to it, a message appears ” Cannot read from source file or disk”.

I put another hard disk in it, but still same problem.

ok i just bought this computer and it is used…. and when i turn it on it says something like disk failure and it takes 4 or 5 times turning it on and off before it reads my hard drive. is my hard drive going bad in it or is it the motherboard? here are some specs on my computer

AMD Athelon xp 3000+ processor (2.16GHz)
512 MB Ram (upgradeable to 2 G)
160GB (7200 rpm) Ultra DMA HD
SATA hookups
DVD+RW/CD-RWcombo drive
DVD/CD Rom Drive
Floppy drive

2 front USB 2.0 and 1 front firewire port
additional 4 USB 2.0s in the back and additional single firewire port also in the back.
modem and ethernet

thanks
yea the hard drive is hooked up correctly
it is not loose and i have format it and i have formatted it like 15 times and stuff and it still does the same thing

For more information go to tiger.tv The Thermaltake BlacX docking station is built vertically, and can hold either a 3.5″ or 2.5″ disk without the need of an enclosure. The hard drive is placed on top of the adapter, facing its connectors down. After having it slided into the docking station, the user instantly gains access to its full contents.