This is a Apple branded 160GB 3.5" 7,200rpm SATA hard drive. Apple use multiple manufactures for their hard drives, this listing is for a Seagate drive.
This hard drive will come with a fresh OS. If you do not own a legal copy of OSX or it is not the required operating system for the machine in which you plan to use, you should erase this hard drive before use.
Hard Drive EEE Codes: 242, 92H, 9LT, 3UU, WJG, WMQ, X7U, XE4, V6H, V6M, TBF, TBH, RT9, SH2, RJS, SEG, XQB, R3U, R5Y