Product review (1 stars): AVOID  technical and customer service a true JOKE!!!!
I purchased NIT-5665. Cost 5 years ago was $5700, and when it stopped working the company could not get it fixed without purchasing over $2000 worth of Boards to try one at a time. The technical service was a true joke. The repairman called 4 times over two days, got a different"expert" each call, who said something different. I then called customer service, escalated up to "management" and received NO help. Rather than play Russian Roulette with three MORE boards, I threw it out and bought a GE profile with 6 year extended warranty and instillation, for than less than the parts I was asked to buy and try.