My Dell inspiron n5010 laptop internal hard disk was not working properly i wanted replace it with 1 tb internal hard disk please let me know the suitable internal hard disk model for it.
I've made a little search and was able to find a topic very similar to yours. Take a look here:
http://en.community.dell.com/support-forums/disk-drives/f/3534/t/19487936 and tell me if you can find this helpful. I would be happy to hear that I helped.
Just one more thing. If you plan to buy a SATA III drive instead of SATA II drive and to put it in a bay with a SATA II port, you will only get the transfer speed of SATA II connection.
Merry Christmas and Happy New Year!