Allied Telesis AT-GS900/24 - Manual (Page 15)

AT-GS900/16, AT-GS900/24 Fanless Gigabit Ethernet Switches Installation Guide
15
Hardware Feature Description
The following sections describe hardware features of the AT-GS900/16
and AT-GS900/24 Fanless Gigabit Ethernet switches:
ˆ System and Port LEDs
ˆ Twisted Pair Ports
ˆ AC Power Connector
Twisted Pair
Ports
The AT-GS900/16 Fanless Gigabit Ethernet switch features 16 twisted
pair ports, and the AT-GS900/24 Fanless Gigabit Ethernet switch features
24 twisted pair ports.
Type of Connector
The twisted pair ports feature 8-pin RJ-45 connectors. (For the port
pinouts, refer to RJ-45 Twisted Pair Port Connectors “RJ-45 Twisted Pair
Port Connectors” on page 39.)
Speed
The ports are 10Base-T, 100Base-TX, and 1000Base-T compliant and are
capable of 10 megabits per second (Mbps), 100 Mbps, and 1000 Mbps
speeds. The ports are IEEE 802.3u Auto-Negotiation compliant. With
Auto-Negotiation, the switch automatically matches the highest possible
common speed between each switch port and each end-node. For
example, if an end-node is capable of only 10 Mbps, the switch sets the
port connected to the end-node to 10 Mbps.
Duplex Mode
Each twisted pair port on the switch can operate in either half- or full
duplex mode. The twisted pair ports are IEEE 802.3u-compliant and will
Auto-Negotiate the duplex mode setting.
Note
For the switch to set the duplex mode for each port correctly, the
end-nodes that you connect to the switch ports should also use
Auto-Negotiation. Otherwise, a duplex mode mismatch can occur,
affecting network performance. For further information, refer to
“Duplex Mode” on page 19.