Dell inspiron 15 5580 SSD upgrade

Hello, I’ve just bought a dell inspiron 15 5580 with an SSD drive in the M.2 slot. I was looking to add a SATA SSD to this to have my 2 OS on separate drives, Unfortunately I can’t find any of the additional spare parts for this version of the 15 5000 series(hdd caddy or cable to connect to motherboard) I was wondering if anyone had any experience of getting hold of these spare parts. Alternatively, would the sizes of the spare parts for the 5570 model be likely to fit my current model? Thanks for any help or advice anyone can offer