HPE FlexFabric 7904 Front (Port Side) to Back (Power Side) Airflow Fan Tray - Black - Gray - Metal - FlexFabric 7904 - 247.9 mm - 320 mm - 120.9 mm (JG684A)

HP MSR4000 SPU-300 Service Processing Unit, with 4 onboard copper GE, 4 SFP, 1 SFP+, 2 VPM slots, 4GB DDR3 memory default, full software features supported, used for data forwarding, encryption/decryption, and analyzing/filtering of data packets.