
Aruba AP-120 Series Indoor Access Point | Installation Guide 7
Connecting Required Cables
Install cables in accordance with all applicable local and national regulations and practices.
Ethernet Ports
The RJ45 Ethernet ports (ENET0 and ENET1) support 100/1000Base-T auto-sensing MDI/MDX
connections. Use these ports to connect the AP to a twisted pair Ethernet LAN segment or directly to an
Aruba Mobility Controller. Use a 4- or 8-conductor, Category 5 UTP cable up to 100 m (325 feet) long.
The 100/1000 Mbps Ethernet ports are on the bottom of the AP. These ports have RJ-45 female
connectors with the pin-outs shown in Table 1.
Serial Console Port
The serial console port allows you to connect the AP to a serial terminal or a laptop for direct local
management. This port is an RJ-45 female connector with the pinouts described in Table 2. Connect this
port in one of the following ways:
z Connect it directly to a terminal or terminal server using an Ethernet cable.
z Use a modular adapter to convert the RJ-45 (female) connector on the AP to a DB-9 (male)
connector, and connect the adapter to a laptop using an RS-232 cable. See Figure 7 for connector
details of the adapter.
Aruba 12x APs are intended only for installation in Environment A as defined in IEEE 802.3.af, Power
over Ethernet. All interconnected equipment must be contained within the same building, including
the interconnected equipment’s associated LAN connections.
Table 1 Connector for Ethernet Ports ENET0 and ENET1
Connector Pin
Signal
Name
GE Connection
FE
Connection
PoE
1 BI_DA+ Bi-directional pair A+ RX+ POE negative
2 BI_DA– Bi-directional pair A– RX– POE negative
3 BI_DB+ Bi-directional pair B+ TX+ POE positive
4 BI_DC+ Bi-directional pair C+ Spare pair POE positive
5 BI_DC– Bi-directional pair C– Spare pair POE positive
6 BI_DB– Bi-directional pair B– TX– POE positive
7 BI_DD+ Bi-directional pair D+ Spare pair POE negative
8 BI_DB– Bi-directional pair D– Spare pair POE negative
Table 2 Connector for Serial Console Port
Connector Pin Signal Name Function
3TXD Transmit
4GND Ground
5GND Ground
6RXD Receive
Pins not listed are not connected.
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