Handheld gaming PCs upgrade guides
Steam Deck (LCD and OLED models), ROG Ally, Legion Go — soldered RAM; M.2 2230 SSD upgrades.
ASUS ROG Ally
Windows handheld — 16 GB soldered; M.2 2230 SSD slot.
Lenovo Legion Go
Large Windows handheld — 16 GB soldered; M.2 2242/2230 SSD upgrade.
Steam Deck (LCD, 64 GB / 256 GB / 512 GB)
Original Steam Deck — 16 GB soldered RAM; M.2 2230 NVMe on 256 GB+ models.
Steam Deck OLED (512 GB / 1 TB)
OLED Steam Deck — 16 GB soldered RAM; M.2 2230 NVMe; improved display and battery.