Part A5866A is compatible in the following Models:

HPE 9000 rp7400 (N-class) Servers

9000 Server - N4000 - A3639A
9000 Server - N4000 - A3639AR
9000 Server - N4000 - A3639B
9000 Server - N4000 - A3639BR
9000 Server - rp7400 - A3639C
9000 Server - rp7400 - A3639CR