Hello,

I have a DELL E6520, and the Hard disk failed so I cannot install windows on it anymore. 

I would like to replace it, but I am afraid to get a wrong one! 

My HDD's specifications are the following: HARD DRIVE..., 500GB, S2, 7.2K, P11, SGT-HOLL

1. I would like to know what S2 and P11 mean here?
2. if S2 means SATA II does that mean that I cannot use a SATA hard drive?
3. Can I still buy a hard drive from any firm other than Seagate?
4. I still have a next business day warranty valid, does that mean I can get the replacement part for my Hard drive for free?
   

Thank you!