I was under the impression that all 2.5 inch drives fit I'm laptop. I bought this for 4tb drive for my area 51m r2 but looks to have a different connector and
Amazon.com: Deal4GO SATA Hard Drive Cable 2K51N 02K51N w/ 2.5" HDD Caddy Carrier 0J8J5W J8J5W Replacement for Dell Alienware Area 51M ALWA51M : Electronics
Dell Alienware Area 51 ALX - 500GB SATA Hard Drive Windows 10 Home 64-Bit | eBay
Alienware Area 51m R2 review | GamesRadar+
Dell Alienware Area 51M Laptop, 17.3-inch FHD (1920 x 1080), 9th Gen Intel Core i9-9900K, 32GB RAM, 2 X 512GB SSD (RAID0) + 1TB SSHD, NVIDIA GeForce RTX 2070, Windows 10 (used) - Walmart.com
Alienware Area-51m Teardown: Inside The Belly Of The BEAST! - YouTube
The Alienware Area-51m is a full-fledged desktop disguised as a laptop - The Verge
Amazon.com: Deal4GO SATA Interposer Board D3P25 LS-J106P to NVMe M.2 SSD Hard Drive SSD-3 & SSD-4 w/ 2.5" HDD Bracket R24Y6 for Dell Alienware Area-51m R2 : Electronics