does this come with an adaptor to allow use in place of a 3.5in drive in a desktop?
I don’t know but I went and did a quick search of this drive and well. You try.
SSDs weigh damn near nothing. A loop of duct tape is your adapter.
My 128gig SSD we mounted with a couple of velcro strips to the top of one of the 51/4 bays, works great and easy to remove.