33
Subject to errors and modifications
W&T Ports and indicators
4.2 Ethernet port
The USB-Server Industry has an IEEE 802.3 compatible network
terminal. The physical connection is made using TP copper
cable.
4.2.1 10/100BaseT to RJ45
The 10/100BaseT network interface has a shielded RJ45
connector. The assignments indicated in the following
illustration correspond to an MDI interface, so that the
connection to the hub or switch is made using a max. 100m
long, 1:1 wired and shielded patch cable.
1 2 3 4 5 6 7 8
Pin
1
2
3
4
5
6
7
8
Direction
Out
Out
In
In
IN
In
In
In
Device
w/o PoE
Tx+
Tx-
Rx+
nc
nc
Rx-
nc
nc
Device
with PoE
Tx+
Tx-
Rx+
Vcc positive
Vcc positive
Rx-
Vcc negative
Vcc negative
The network connection is galvanically isolated from the supply
voltage and the USB ports to at least 500V
rms
.
Power-over-Ethernet - PoE
The USB-Server can obtain its power through the network
interface according to IEEE802.3af/Power-over-Ethernet. Power
can be brought in using the data pairs or the wire pairs unused
with 10/100BaseT (see also the Supply Voltage section).
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