https://wccftech.com/surface-pro-8-upgradable-ssd-uncommon-form-factor/

With Microsoft’s event starting in a few hours, we will know precisely what sort of upgrades the company has introduced to the Surface Pro 8. In our previous report, there were notable additions, particularly when it came to the SSD, which was said to be user-upgradable, but at the time, we did not have information regarding its form factor. According to the latest info, if you want to swap out the existing SSD on the Surface Pro 8 for a faster one and one featuring more storage, it might be difficult to get your hands on one, as it may be an uncommon form factor.

The Korean blog Naver has provided some key specifications of the upcoming Surface Pro 8, which we will get to later. First, we want to discuss the 2230 M.2 SSD, which should be replaceable by accessing the rear side of the Windows 11 tablet, negating the need to tear down the entire machine. While that is convenient, we do not know how many total M.2 slots there will be available for users to upgrade.