Amazon.com: 2nd HDD SSD Hard Drive Caddy, for Asus Laptop ROG GL552 GL553 GL552VW GL552V GL551J GL551JW GL553 GL552 GL553VD GL553V, SATA3 Second Solid State Disk Enclosure, CD DVD Optical Bay Replacement :
250GB SSD 2.5 inches | Official Asus Partner - Asus Accessories
Upgrading AsuS GL553 editing laptop with m.2 SSD - YouTube
ASUS ROG Strix GL503VD-DB71 SSD Replacement - iFixit Repair Guide
Amazon.com: Second 2nd M.2 NGFF SSD Caddy Internal Cooling Radiator Fan Cooler for Asus Laptop ROG GL552 GL553 GL552VW GL552V GL551J GL551JW GL553 GL552 GL553VD GL553V, CD DVD Optical Bay Replacement :
SSD Upgrade for Asus GL553VD ROG 256GB/512GB/1TB/2TB | eBay
GL553VD Updated with a Samsung NVMe SSD 960 PRO M.2 512GB | Geeks3D