The PS5 has an M.2 expansion slot where you can put a second PS5 SSD, and a recent update to the system firmware now allows you to use an SSD with up to 8TB of capacity. The PS5 requires an M.2 NVMe SSD with a PCI-Express Gen4 interface and a Key M connector. The best SSDs for the PS5 include the WD Black SN850X, Sk hynix Platinum P41, Corsair MP600 Pro LPX, Crucial P5 Plus, Kingston Fury Renegade SSD, and Seagate FireCuda 530. The WD Black SN850X is considered the best SSD for the PS5. When choosing an SSD for the PS5, it is important to ensure that it has effective heat dissipation with a cooling structure, such as a heatsink and a heat transfer sheet, as the console has no way to dissipate heat with the M.2 port and metal cover.