Question about upgrading hard drive

[mlli4]

I have a T42. Recently I bought a new hard disk to replace the old 40GB one. I notice there is some metal cover on my original hard disk to protect the hard drive circuit . Should I remove it and install it on my new driver? Do I need any special tool to do that?

Thanks a lot.

[Orevin]

Yes, it is called caddy and you should put it on your new hard drive.

[mlli4]

Thanks for your help.