Hi Dan
NVR is DS-7608N1-12/8 running with firmware V4.61.030 Bld 240123
Original camera was 2cd2385FWD-1 replaced with 2CD2146G2 - 1SU
All 7 cameras connected directly to NVR PoE ports
Just one of the earlier swops was a 2cd2146G2 -1SU again replacing a 2385FWD, no issues
Regards