I am currently using Hitachi HTS543232A7A384 in my T520. It is by far the quitest 320GB rotating hard drive I can find. Will upgrade to mSata or 2.5'' SSD later on
I installed an Intel 310 80GB mSATA.
Works fine so far although removing the keyboard the first time is a pain.
It was nice "talking" to you.
Have a nice day
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