Assy No: 51401288-100 Product Type: High Performance Kernel Processor Manufacture : Honeywell Part No: 51401287 The HPK2-2 processor card is an early LCN processor based on the Motorola 68020, with 2 MW of memory. For most node applications it is used with EMEM or QMEM cards for additional memory. This processor no longer in widespread use, having been replaced by the K4LCN-4, K4LCN-8, and K4LCN-16 in most current LCN systems.