1 WAN + 4 Ports Ethernet SOHO Router P 44
Appendix C Cabling and Pin Assignment
C-3 RJ-45
There are different grades, or categories, of twisted-pair cabling. Category 5 is the most reliable and is highly
recommended. Category 3 is a good second choice.
Straight-through
cables are used for connecting
computers’ NIC card to a hub.
Crossover
cables
are used for connecting a hub to another hub. (SOHO Router
provides a built-in uplink/normal switch. uplink mode is crossed internally, which allows you to link or connect
hubs together with a straight-through cable instead.)
C-3-1 RJ-45 pin assignment
There are 8 thin, color-coded wires inside, run from one end of the cable to the other. All 8 wires are
used.
Table C-1
To determine which wire is wire number 1, hold the cable so that the end of the plastic RJ-45 tip (the
part that goes into a wall jack first) is facing away from you. Face the clip down so that the copper side
faces up (the springy clip will now be parallel to the floor), when looking down on the copper side, wire
1 is on the far left.
C-3-2 Connection between NIC card and Hub
A
straight-through
cable, wire 1,2,3,and 6 at one end of the cable are also wires 1,2,3, and 6 at the
other end. The straight through cable is used in connecting the NIC card and the hub.
RJ-45 Color Chart
Wire 1
White with an Orange stripe
Wire 2
Orange
Wire 3
White with a Green Stripe
Wire 4
Blue
Wire 5
White with a Blue Stripe
Wire 6
Green
Wire 7
White with a Brown Stripe
Wire 8
Brown
Pin 1
