According to [link|https://www.youtube.com/watch?v=jzRb_3U2vs0|teardowns] and [link|https://www.reddit.com/r/Surface/comments/rilgdb/what_is_surface_laptop_go_ssd_nvme_or_m2/?show=original|questions] [link|https://community.spiceworks.com/t/is-it-possible-to-replace-drive-on-microsoft-surface-laptop-go/825444/3|around], it uses a replaceable standard NVME M.2 2230 SSD (note that this applies to "Surface ''Laptop'' Go", while "Surface Go" has it soldered onboard). Any SSD with these specs and from a reputable manufacturer should be good.
You could try checking a video first: [link|https://www.youtube.com/watch?v=NL4B4tBWd3I|1], [link|https://www.youtube.com/watch?v=9n-zATiupHk|2]
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[link|https://www.microsoft.com/en-us/download/details.aspx?id=100440|Official replacement guide is here as "Surface Laptop Go Removable SSD English Service Guide"]
According to [link|https://www.youtube.com/watch?v=jzRb_3U2vs0|teardowns] and [link|https://www.reddit.com/r/Surface/comments/rilgdb/what_is_surface_laptop_go_ssd_nvme_or_m2/?show=original|questions] [link|https://community.spiceworks.com/t/is-it-possible-to-replace-drive-on-microsoft-surface-laptop-go/825444/3|around], it uses a replaceable standard NVME M.2 2230 SSD (note that this applies to "Surface ''Laptop'' Go", while "Surface Go" has it soldered onboard). Any SSD with these specs and from a reputable manufacturer should be good.
You could try checking a video first: [link|https://www.youtube.com/watch?v=NL4B4tBWd3I|1], [link|https://www.youtube.com/watch?v=9n-zATiupHk|2]