These are a replacement LITEON DG-16D2S DVD drive for the Xbox 360, they are hard to get a hold of brand new as many sold online are refurbished from the factory.
If you’re repairing for Xbox 360 consoles and need a solid for Xbox 360 replacement DVD drive, the LITEON DG-16D2S is the best option out there to date.
Note about swapping XBox 360 DVD Drives:
With all Xbox 360 DVD drives you need to extract the DVD key from your old drive's BIOS and flash that key into the drive you are replacing it with. You may also need to spoof the drive if you're not replacing a drive with the exact same brand or model. This is not a simple swap-out procedure and should only be performed by a competent technician.
NO RETURNS FOR BUYING ERRORS FOR THIS ITEM.