100% brand new and high qualityAdd a second hard drive to your laptop using your laptop's optical drive.This is a great solution for those who want to add a second hard drive in their laptop.This device/caddy will fit in a "standard" CD/DVD/optical drive bay found in laptop computers.Simply pull out your CD/DVD drive and replace it with our optical bay hard drive caddy.This is a good working adapter and is guaranteed.Supports plug & Play.Like a primary HDD， fast & reliable connection.No cables/PSU/software driver needed.HDD Interface:SATA.Laptop/ mother board interface: SATA.Fits for 9.5 mm SATA interface hard drive.Simple installation: remove CD-ROM drive and plug the adapter (plus hard drive) in slot.