HP JG413A, Msr4000 Spu-100 Svc Processing, Device Control processor, Form Factor Plug-in module, RAM 2 GB. The HPE JG413A is an SPU-100 Service Processing Unit compatible with HP MSR4000 Series Routers. It has 4 onboard copper GE, 4 SFP, 2 VPM slots, 2GB DDR3 memory default, and full software features support.