|I am running the hard drive unlocked since my Xbox is hardmodded. But from what I can see, this hard drive should lock fine. Chimp says it is lockable and the other post on this website say so too. I used this adapter (http://www.dx.com/p/rxd-629a-parallel-pata-to-serial-sata-hard-disk-converter-green-black-white-165213) and a 80 wire (Ultra DMA ATA133) IDE cable. Stock cable gived me corrupted fonts on HeXEn and AID. Dashboards installed fine, but it would give me error 13. Cable solved everything.