Hi-Eshop New 12.7mm Thick Universal Internal SATA 2nd HDD SSD Hard Drive Caddy for 2.5" CD /DVD-ROM Hi-Eshop always provide customers with the best product and service. All products sell on Amazon have been tested strictly. The height of the hard drive caddy is 12.5mm, it fits to all 2.5" notebook drive. Fast and reliable connection just as the primary HDD. Fully integrated into Laptop, no cables / PSU / software driver need. Dual boot, Support installation of 2nd Operating System on the 2nd HDD and boot selection.