10BaseT and 100BaseT are most common mode of LAN. You can use UTP category-5
cable for both mode. (You can use UTP category-3 cable for 10BaseT, in which
there are only 3 wires inside the cable.)
A straight cable is used to connect a computer to a hub. You can use it to
connect 2 hubs in the case one of the hub has an uplink port (and you use normal
port on the other hub).
| Pin ID
| side A
| side B |
| 1
| orange-white
| orange-white |
| 2
| orange
| orange |
| 3
| green-white
| green-white |
| 4
| blue
| blue |
| 5
| blue-white
| blue-white |
| 6
| green
| green |
| 7
| brown-white
| brown-white |
| 8
| brown
| brown |
A cross cable for 10BaseT and 100BaseT is used to connect 2 computers directly
(with ONLY the UTP cable). It is also used when you connect 2 hubs with a normal
port on both hubs. (In other words, the cross cable is used relatively in a rare
case.)
| Pin ID
| side A
| side B |
| 1
| orange-white
| green-white |
| 2
| orange
| green |
| 3
| green-white
| orange-white |
| 4
| blue
| blue |
| 5
| blue-white
| blue-white |
| 6
| green
| orange |
| 7
| brown-white
| brown-white |
| 8
| brown
| brown |