128 GB, 256 GB, 512 GB or 1 TB (Choose Above) SSD SATA Hard Drive Laptop for HP ProBook 650 G1 G2 G3 G4 G5 Notebook with Windows 10 Pro Installed UEFI. (One 2.5" Solid State Drive or Hard Drive) or (One M.2 NGFF (2280) Solid State Drive) Note: When the M.2 (2280) Drive is installed, the M.2 Drive occupies the 2.5" Drive bay.
eBay