HP Interface (Module) J8031A is compatible in the following HP Models:

HP LaserJet 600 Multifunction Printer series

HP LASERJET ENTERPRISE FLOW MFP M631H - J8J64A
HP LASERJET ENTERPRISE MFP M631DN - J8J63A
HP LASERJET ENTERPRISE MFP M631Z - J8J65A

HP LaserJet 500 Printer series

HP LaserJet Managed E50045 - 3GN19A

HP Color LaserJet Managed E55040 Printer series

HP Color LaserJet Managed E55040 - 3GX98A