HP
M51971-001
is compatible in the following HP Models:
HP Z2 Small Form Factor G8 Workstation (RocketSaturn)
HP Z2 G8 SFF XW1350 32GB/1TB PC - 4D4M9PA
HP Z2 Small Form Factor G8 Workstation (271P7AV) - 5A619PA
HP Z2 Small Form Factor G8 Workstation (271P8AV) - 63B84PA