This is an SSD drive with a 480 GB storage capacity. This model has an M.2 form factor.
From Amazon
WD Green 480 GB Internal SSD M.2 SATA, Green-Performance
EE Store
WD 480GB Green SATA 6Gb/s 2.5 SSD M.2 2280
This product is also available at 1 unverified merchant.