At my work, we have many laptops. I use one myself, but I noticed something very odd when looking at the Ethernet port on mine. It had only 3 conductors! Yet when plugged in, worked perfectly with a 100baseTX connection! How does this work? A category 5 cable has 4 pairs, or 8 wires. How can the laptop still get a 100mbit connection with only 3??? My boss said that TCP/IP only uses 3 of the wires, but that makes no sense to me. Anyone know?