HP
M51971-001
is compatible in the following HP Models:
HP Z2 Small Form Factor G8 Workstation (RocketSaturn)
HP Z2 Small Form Factor G8 Workstation (271P7AV) - 4D4M9PA
HP Z2 Small Form Factor G8 Workstation (271P7AV) - 5A619PA
HP Z2 Small Form Factor G8 Workstation (271P8AV) - 63B84PA