The following is a detailed introduction about our products:Name:2nd HDD SSD Hard Drive Caddy Tray Replacement for Lenovo Thinkpad T420 T430 T510 T520 T530 W510 W520 W530, Internal Laptop CD/DVD-ROM Optical Modular Bay Adapter to 2.5 Inch 12.7MMThe product is new and high qualityAdd this caddy to your laptop to give you another hard drive.Simply remove your CD/DVD-ROM drive and put the Caddy (with the added hard drive) in its place... This is a good working adapter and is guaranteed.This Hard Drive Adapter lets you add a second hard drive to the laptop systems.With a second hard drive, you can quickly store and back up critical data.Support: SATASupport hard disk: 2.5 HDD, SATA,SATAII SDDCaddy Thickness: 12.7mmHow to use: Unpack the New drive, lift the adapter retaining latch, the screw to the hard diskThree channels are optional for different branded laptops as the picture showsInsert the drive into the Adapter at an angleSlide the drive into the connector until it locks into placeLower the adapter retaining latch until it snaps closedColor: black + silverMaterial: ABS + metalProduct size: 12.7*12.7*1.27cmPackage Contents: 1* Second HDD caddy 12.7mm1* Screwdriver1* BaffleOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.About UsWe provide the good product with the best price,we support Wholesale/Drop Shipping Order1. For Drop Shipping order, please remark"dropshipping order", we will prioritize it.2. For Wholesale/Drop Shipping orders, if you have any ideas about the price or package,please contact us in advance,we will give you the best service to satisfy your demands.About Shipments1.We will send out the orders ASAP once your payment is completed normally.2.Please write your complete delivery address with correct phone number and zip code, especially please confirm your full name.About After-sale ServiceWe are reliable seller and we have our professional after-sale service for all of our customs. If there is any question about the order,please contact us in advance ,we will always here until you get a happy answer.About Feedback1. Please check the package and item when you get carefully to make sure there is no problem.2. If you have any problem or are not entirely satisfied with your package,please don’t be hesitate to contact us first before leaving negative feedback. We will resolve the problem to satisfy you.3. If there is no problem, please leave us five star positive feedback.Your affirmation is our greatest motivation ! !