I recently decided I wanted to upgrade the hard drive on my desktop because the one it came with is only 40 GBs of capacity. I pulled it out and here are the specs:

Seagate Barracuda 7200.7
40 GBs
Model #: ST340014A
Serial #: 5JXJFBBN

Ultra ATA
+5V 0.72A
+12V 0.35A


I ordered a new hard drive from Newegg but when it arrived I noticed it was not compatible with my computer. The specs of the new hard drive were:

Western Digital Caviar SE16 7200
320 GBs
Model #: WD3200AAKS - 75VYA0
Serial #: WCARW4101280

Serial ATA
5VDC 0.68A
12VDC 0.55A


I thought this drive would be the right replacement but I was wrong.

Can anyone tell me what kind of hard drive i need for my computer to replace the seagate and if its possible for me to get 250+ GBs or is my computer too old, its a Dell Dimension 2400 btw, got it in 2003 I believe.

Or could someone find me the right hard drive on newegg/tigerdirect and link it to me? Thanks.