Got a used HP Probook laptop. Just needs a new drive. HP specs say it has an m.2 2280 slot. So that’s what I ordered. Guess I needed to look closer.
edit: Thanks for all the info, guys. Different types of keys are explained here. Gonna have to look for a sketchy no-name brand.
B key vs M key. Laptop likely needs a SATA M.2 using B or B+M keying, you have a PCIe x4 drive with M keying.