asus ROG maximus viii hero alpha

I'm looking for a little bit of assistance. Motherboard: ASUS ROG Maximus VIII Hero Alpha Current Storage: 2 x SATA HDD (Storage), 1 x Samsung 970 EVO m.2 NVME SSD - Motherboard M.2 slot, OS install I've been given a second m.2 SSD by a friend, SK Hynix N210A BB (256GB), and have purchased a...