Surplus IT equipment is a real crapshoot these days. The pace of new development and technology increases as time goes on, so stuff as new as the late 1990s or even early 2000s has no viable re-sale value, whereas before you might still be able to get good re-sale value for stuff ten years older or more.
As glorycloud suggested, put the part numbers into Goolge and eBay and see what comes up. With eBay, make sure you check "Completed listings only" so you see what actually SOLD, not the prices being asked by wishful thinkers and dreamers. Once in a while you find something worth going through the trouble of re-sale, but only if you're willing/able to test it, or else take a much reduced price on an "as-is" sale.
Older switching equipment sometimes has good gold on the PCBs and edge connectors, but I'm finding less and less these days. The best I ever found was a Bay Networks ATM switch/router that had several boards, each of which had huge swaths of 1"+ wide gold planes. I'm going to have fun processing those. I wish I remembered which model it was so I could recommend what to look for out in the wild, but I tore it apartt and discarded the cabinet before I thought of it.
These days, if I can't easily sell something that comes through my electronic recycling business, I simply see it as a pile of raw materials to mine for its value at pennies by the pound. Otherwise you end up accumulating too much crap and then you run out of space in your warehouse (a constant problem with me).