A:Answer This All in one supports one of the configurations: One 2.5-inch hard-disk drive
One M.2 2230/2242 solid-state drive,
One 2.5-inch hard drive and one M.2 2242 solid-state drive. However, we suggest you to not do any third party or non-Dell aftermarket upgrade, as that can void the system’s warranty. We suggest you to contact the Dell Technical support team regarding this query.