The following sections describe hardware features of the AT-GS900/16 and AT-GS900/24 Fanless Gigabit Ethernet switches:
System and Port LEDs
Twisted Pair Ports
AC Power Connector
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” on page 44.)
Speed
Each port is 10/100/1000Base-T compliant and is capable of 10, 100, or 1000 Mbps speed, respectively. 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 23.
