The Asus S1400EA Laptop Supports Single and Dual Drive Configurations. (One 2.5" Solid State Drive or Hard Drive and/or One M.2 NGFF (2280) Solid State Drive) Note: If the 2.5" Drive was not installed from Asus, you will need the 2.5" Drive Caddy p/n 13NB0ST0L01011 and connector cable p/n 04022-00080000 for installation.