FOR DELL FOR Alienware X51 R3 PCIE SSD board HD61H 0HD61H CN 0HD61H MS 4389 100% test ok|ssd ssd|board boarddell x51 - AliExpress
How to Upgrade an Old PC to Be Fast Again - Install Samsung EVO 860 SSD on Alienware X51 R1 - YouTube
The inside of the Aurora R9. It's my first desktop, everything look good? Where do I install a new SSD? : r/Alienware
Hands-on with Alienware's water-cooled, Skylake-packing X51 microtower
Alienware 15 R3 SSD 3 seems to be extremely hard to remove, don't know why this came installed when I bought it it also has windows on it but that shouldn't matter. :
Upgrading to an SSD - Alienware User Support
Solved: X51 R3 SSD Upgrade questions - Dell Community
Alienware M.2 SSD Installation & Windows 10 Migration - YouTube