Start by counting ports — from a five-port desktop model to a 48-port rack-mounted one — and only then look at management: unmanaged units work the moment they are switched on, while Easy Smart and managed ones let you split the network into VLANs and watch the load. The third question is whether you need PoE: those models power cameras, access points or phones over the same cable, and the description says how many of the ports actually supply power.
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Start by counting ports — from a five-port desktop model to a 48-port rack-mounted one — and only then look at management: unmanaged units work the moment they are switched on, while Easy Smart and managed ones let you split the network into VLANs and watch the load. The third question is whether you need PoE: those models power cameras, access points or phones over the same cable, and the description says how many of the ports actually supply power.