RJ-45 Connectors
Each of Port #1 to Port #7 provides one RJ-45 connector, which are implemented as MDI-X jack. An MDI-X jack is designed with internal crossover function. The function allows a connection to a computer using straight-through UTP cable. The Port #8 provides one MDI-X RJ-45 connector and one MDI-I RJ-45 connector. Only one connector can be used at the same time. The pin definitions for MDI-X jack and MDI-I jack are as follows:
PIN# | MDI-X Jack | MDI-I Jack |
1 | Rx+ | | Tx+ |
2 | Rx- | Tx- |
3 | Tx+ | Rx+ |
6 | Tx- | Rx- |
4,5,7,8 | NC | NC |
UTP Cables
For connecting to a 10BASE-T Ethernet device, a 2-pair Category 3, 4, or 5 UTP cable can be used. For connecting to a 100BASE-TX Fast Ethernet device, only 2-pair Category 5 UTP cable can be used. With different wiring, two types of the UTP cables are defined as follows:
