Steam Deck/ROG Ally SSD Upgrades Coming from Western Digital - Steam Deck HQ
steamdeckhq.com
Western Digital has started a new line of M.2 2230 SSDs specifically to be used in upgrading the storage of the Steam Deck and ROG Ally.

Western Digital is creating new SSDs specifically in the form factor used in handhelds like the Steam Deck and ROG Ally. These come in 500gb, 1tb, and 2tb options.