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Sony has sold more than 10 Million pieces of PlayStation5 console since its release in November last year. One of the key features missing in the console has been the inability to expand storage. But Sony has now claimed that users can do so now but the feature is currently in BETA testing and the users can update their consoles themselves if they don't mind running beta software. However, you will need to have a PCIe Gen4 x4 M.2 NVMe SSDs that offer 5,500MB/s or faster read speed to expand your PS5 storage. Currently, only M.2 SSDs types numbered 2230, 2242, 2260, 2280, and 22110 are supported. The expanded storage can be anywhere between 250GB to 4TB.
Sony has also pointed out that not all games will be playable with the same performance level you'd expect from an internal SSD. This is still true even if you use an M.2 SSD with 5,500MB/s read speed. Sony wrote in its support post "Not all games are necessarily playable with the exact same performance provided by the PS5 console’s internal Ultra-High Speed SSD, even where the M.2 SSD device’s sequential read speed is faster than 5500MB/s,".
Sony has also warned the prospective users prone to expanding their storage that using M.2 SSD will require cooling. Sony added.“Using an M.2 SSD with your PS5 console requires effective heat dissipation with a cooling structure, such as a heatsink. You can attach one to your M.2 SSD yourself, either in a single-sided format, or double-sided format. There are also M.2 SSDs that have cooling structures (such as heatsinks) built-in,”.
If you are interested in increasing your PS5 storage, you can sign up for the PS5 BETA program. Once you are done with it, check the instructions on how to safely install and remove SSD from Sony's support page.