CD0254B SATA to IDE 2nd HDD caddy Helps to conveniently add one more hard disk drive to your laptop Easy for installation and replacement Easier， faster and more stable comparing with an external USB HDD case Height: 12.7 mm Suitable for use with HD， DELL， ACER， BenQ， ASUS， Lenovo， Greatwall and other laptops with a IDE drive interface with a height of 12.7mm