Add a 2nd hard drive or SSD to a HP ZBook 15 or ZBook 17 by replacing the optical drive with a drive caddy. Use a standard 2.5 SATA hard drive or 2.5 SATA SSD. Installation is a simple DIY project. You can add up to 1 TB (Terabyte) of drive space. You could also set up the ZBook laptop for dual-boot. Boot from the main drive or boot from the 2nd drive. The HDD caddy shown here is specifically manufactured for the HP ZBook 15 and 17 optical drive bay. The bezel / front plastic faceplate is manufactured to match the color, shape, contour and texture of the laptop. The caddy is manufactured in light-weight die-cast aluminum for consistency in product quality, durability, to dissipate heat from the drive and to help reduce EMI noise. More information on caddies are found here: https://www.newmodeus.com/shop/index.php?main_page=product_info&cPath=2_5&products_id=556&zenid=70a086f756652ad4ff95f84e62ba1405
HP ZBook - add a 2nd HDD or SSD by replacing DVD optical drive