D-Link DUB-1312 User Manual - Page 20

Section 3 - Troubleshooting Troubleshooting Do I need to use a crossover cable or straight-through cable? With most of D-Link's switches/routers, the Ethernet ports are Auto MDI-II/MDI-X. This means the port will auto-detect the cable type. Auto MDI-II/MDI-X ports may react differently if the Ethernet cable is not properly pinned. If you make your own cables, it is very important that they follow the industry standard pin-out (568A and 568B). Computer connections to a hub, switch, or router typically use a straight-through cable. When connecting a computer to another computer or to an uplink port then a cross-over cable is typically required. Rule of thumb: "If there is a link light, the cable is right." Why isn't my DUB-1312 achieving one Gbps speed? 1 Gbps (1,000 Mbps) is the theoretical maximum speed of the gigabit Ethernet standard, and actual speeds may vary. Gigabit connectivity is dependent on a number of factors, and just one weak link in your network can reduce data speeds. If you are not achieving gigabit speeds, you should check the following: • Ensure that the DUB-1312 is plugged in to a USB 3.0 port, and that the drivers for this port are correctly installed. • Check your network cable. A cable with specification for Category 5e (enhanced) or above is required for gigabit speeds, with a maximum length of 100 metres. Also check your cable for damage, or for wear and tear. • If you are connected to a switch, hub, or router, ensure that this device is also gigabit-capable. • Network congestion can affect data rates. You may experience slower speeds due to heavy data traffic elsewhere on the network. D-Link DUB-1312 User Manual 17