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 “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.
