This cart, chosen 12.5 mm height is a standard model, which must adapt to many notebooks welcoming an optical drive 12.5mm (watch this size). My Lenovo IdeaPad Z580 has allowed without problem after 2 screws removed (1 pout the hood below the PC and to remove the optical drive). This kit is perfect to install a second hard drive on a laptop, for example when installing an SSD like me and want to still keep a big mechanical storage disk; I installed it last disc in the cart. The operation takes 10 minutes. Finally, as my notebook to a rounded shape, the caddy made a slight hook, but it does not bother me, it is not unsightly. Recommended for DIY!
