Netgear GS108E switch problem

I had a weird issue today that I wouldn’t have known about if I didn’t have an over-engineered home network monitoring system.

I’ve got a new GS108E managed switch , purchased in anticipation of connecting a NAS to the homelab - I want to have a solid 1Gb connection between the NAS and the servers, and also in anticipation of moving to VLANs before I start to expose self-hosted services to the internet.