How can you determine if an NP5 Prisma is an original or MK2 version? Terry October 04, 2022 07:20 Updated Original NP5 Prisma units have serial numbers beginning with 81. MK2 versions have serial numbers beginning with 82. Related articles What are the latest Prisma firmware versions? What are the differences between the original NP5 Prisma and the NP5 Prisma MK2 versions? What is Prisma? How are Prisma devices updated? Why aren’t music streaming service applications embedded into the Prisma application? Comments 0 comments Article is closed for comments.