HP A6604 Installation Manual page 39

Crossover cable: At both ends of a crossover cable, wires are crimped in the RJ-45 connectors

in different sequences. A crossover cable is used to connect a (for example, PC or router) to
another terminal. You can make crossover cables by yourself as needed.
Table 1-32 Straight-through cable connector pinouts
RJ-45 pin
1
2
3
4
5
6
7
8
Table 1-33 Crossover cable connector pinouts
RJ-45 pin
1
2
3
4
5
6
7
8
You can refer to the table above when distinguishing between or preparing these two types of

Ethernet cables.
When preparing Ethernet cables, please follow the chromatogram given in the table to arrange

the wires. Otherwise communication quality will be affected even if the equipment at two ends
are connected.
When preparing Ethernet cables, use shielded cables preferentially for electromagnetic

compatibility (EMC).
Fiber connecting 1000 Mbps optical Ethernet interface
You can use a single-mode or multimode optical fiber to connect a 1000 Mbps optical Ethernet
interface to an Ethernet. You can select proper fibers for the installed 1000Base-X SFP
modules (GE SFP for short). Since the optical interfaces on these SFP modules use LC optical
connectors, you must use fibers with LC connectors. All SFP modules are hot-swappable.
Signal
Tx+ White (Orange)
Tx– Orange
Rx+ White (Green)
— Blue
— White (Blue)
Rx– Green
— White (Brown)
— Brown
Signal direction Category-5 twisted pair
Tx+ White (Orange)
Tx– Orange
Rx+ White (Green)
— Blue
— White (Blue)
Rx– Green
— White (Brown)
— Brown
Category-5
Signal direction
twisted pair



—
—

—
—
RJ-45 pin
1
2
3
4
5
6
7
8
Signal direction RJ-45 pin

3

6

1
— 4
— 5

2
— 7
— 8