I recently upgraded my router to an ASUS RT-N56U from a Linksys WRT54GL, and upgraded my internet from 25mbps to 50mbps. When I look at the status of my LAN speed, it's only reading 100mbps. I was able to get the LAN to 1Gbps before, so I know my network card is capable of this, but I can't get it back up to 1Gbps anymore. I tried using the old ethernet wire (which I used to reach that speed) and tried plugging directly into the cable modem. I also tried setting the NIC to 1Gbps full duplex. Any ideas?