We use all 3Com equipment at work for our dialup chassis and hubs/switches, as well as 3Com and Intel network cards in our server machines. For our 'tech' machines, they run Realtek-based 10/100 network cards with a Linksys hub (about a total of 5 computers on the hub, not bad at all), which is then ran up to the Cisco switch and routing system upstairs via a gateway. Let me stress that the machines running off of the 3Com equipment (comparing hub vs. hub, not hub vs. switch) the machines running 3Com boards run much better over the network. I have yet to see an option in the Realtek drivers to switch between different utilizations for the NIC, but the 3Com's (as well as mine) have more options than you can imagine in the drivers and software - including options for Normal, Minimal, and maximum network settings - which I find a little nice to have. For those of you yet to own a 3Com board, the settings in their software and excellent. The hardware may not be extremely different, but the drivers and software sure are. While it may be a premium, I find it well spent. I have experience with both and can tell the difference. Both 3Com and Intel have both served me well - Realtek on the other hand is alright (a much better bang for the buck), but not the best you can use. People who mean business run 3Com/Intel, IMO.