Chapter 2 Hardware Description and Connection
ES1100 Series User’s Guide
10
2.1.1 Rear Panel Power Connection
Connect one end of the supplied power cord to the power receptacle on the back of the Switch and
the other end to the appropriate power source.
For ES1100-8P, ES1100-16, ES1100-16P and ES1100-24E, use the POWER ON/OFF switch to
have the Switch power on or off.
2.2 Front Panel
The front panel of the Switch includes the auto-negotiating 10 Base-T/100 Base-TX RJ-45 ports and
the LEDs. Only the ES1100-24G’s front panel provides the 10 Base-T/100 Base-TX/1000 Base-T RJ-
45 ports with shared 100M/1G mini-GBIC open slots.
2.2.1 RJ-45 Auto-negotiating Ports
All the RJ-45 ports in the ES1100 series are auto-negotiating and auto-crossover.
An auto-negotiating port can detect and adjust to the optimum Ethernet speed (10/100/1000
Mbps) and duplex mode (full duplex or half duplex) of the connected device.
An auto-crossover (auto-MDI/MDI-X) port automatically works with a straight-through or crossover
Ethernet cable.
2.2.2 IEEE 802.3az EEE (for ES1100-8P/16/16P/24/24E)
The Switch supports the IEEE 802.3az EEE (Energy Efficient Ethernet) standard to help reduce
power consumption. This allows the Switch to go into power saving mode and switch off part of
receive and transmit circuitry when it is not transmitting or receiving data through an Ethernet
connection.
An EEE-enabled device initiates Low Power Idle (LPI) signals to negotiate and wake up the remote
device when there is data to be transmitted. To use EEE, both devices should be EEE compliant.
EEE is configured on a per-system basis in the Switch. If one of the networking devices that
connect to the Switch doesn't support EEE, EEE may not work in the Switch to save power.
The EEE feature is enabled by default on the ES1100-16, ES1100-24 and ES1100-24E. Press in the
IEEE 802.3az EEE ON/OFF button on the ES1100-8P and ES1100-16P front panel to turn on the
EEE feature. Disable it if the remote side doesn't support it or you don't want the network
performance to be impacted due to the latency from the additional time required for the sleep and
wake transition.
