Newmodeus 2nd HDD caddy for HP 8460w, 8470w Workstation (compare 643921-001) Original caddy Add a 2nd HDD or SSD to your Elitebook 8460w / 8470w Workstation Replaces optical drive Works with 2.5" SATA hard drives up to 12.7mm in height Also compatible with 9.5mm or thinner HDD and SSD Also compatible with the new 2.5" SSD drives