Cracking open a 24-port switch so you don’t have to posting at Hackaday point to an article Tear-Down of an HP ProCurve 2824 Ethernet Switch that is worth to check out for everybody interested in device tear-downs and Ethernet. Tear-Down of an HP ProCurve 2824 Ethernet Switch article shows you the technology inside a managed Ethernet switch with text and pictures. Here is one example picture from the article:
For more information on technology in inside Ethernet switch check also my ethernet switch related blog postings. My FPGA-based Ethernet switches posting had an Ethernet switch block diagram that seems to match quite closely to the circuit board above.