Deyoung 2nd Hard Drive HDD SSD Caddy Adapter for ASUS N551 N551JM N551JK N551JQ Q550LF K751LN N751JK Add a 2nd drive to your laptop by replacing your optical drive This is Universal SATA-to-SATA Optical bay Caddy Adapter Tray; This device accepts 2.5" inch 9.5mm / 7mm high or less SATA HDD / SSD. Compatible with: ASUS N551 N551JM N551JK N551JQ Q550LF K751LN N751JK Notice: Buyers need to remove their optical drive faceplate(bezel) and Bracket to re-use onto the caddy for proper working!!!