The service manual is a bit vague and would lead me to believe you cannot BUT Laptop Mag has a nice article with pics and according to their site you can have 2 SSD with an HDD. That web page is here. And they actually show 2 SSD with an HDD installed.
Hi. I'm having Alienware m17, with 8th gen core i7. It currently have a 256 GB PCIe M2 SSD and a 1TB HDD. It also have an additional slot for SSD. Is it possible to add one more SSD in it and use all three storages? I have checked the manual and it doesn't have a say about using 2 SSD - 1 HDD configuration, although it is having only 2 SSD configuration in the manual.
m17 R1, storage