ZyXEL XGS-4728F User Guide - Page 38
Dual Personality Interfaces, 1000Base-T Ports
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Chapter 3 Hardware Overview The following table describes the ports. Table 1 Panel Connections CONNECTO R DESCRIPTION 20 100/1000 Mbps RJ-45 Ethernet Ports (XGS4526 only) Connect these ports to a computer, a hub, an Ethernet switch or router. 4 or 24 Dual Personality Interfaces Each interface has one 1000Base-T copper RJ-45 port and one mini-GBIC (Gigabit Interface Converter) fiber port, with one port active at a time. • 4 or 24 1000Base-T Ports: Connect these ports to high-bandwidth backbone network Ethernet switches using Category 5/5e/6 1000Base-T Ethernet cables. Use an 8-wire Ethernet cable for Gigabit connections. Using a 4-wire Ethernet cable limits your connection to 100 Mbps. Note that the connection speed also depends on what the Ethernet device at the other end can support. • 4 or 24 Mini-GBIC Ports: Use Small Form-Factor Pluggable (SFP) transceivers in these ports for 1000Base-X fiber-optic connections to backbone Ethernet switches. 3.1.1 Dual Personality Interfaces There are 4 or 24 Dual Personality interfaces, comprising 4 or 24 1000Base-T/ mini-GBIC combo ports. For each interface you can connect either to the 1000Base-T port or the mini-GBIC port. The mini-GBIC ports have priority over the 1000Base-T ports. This means that if a mini-GBIC port and the corresponding 1000Base-T port are connected at the same time, the 1000Base-T port will be disabled. 3.1.2 1000Base-T Ports The Switch has 24 1000Base-T auto-negotiating, auto-crossover Ethernet ports. In 100/1000 Mbps Gigabit Ethernet, the speed can be 100 Mbps or 1000 Mbps. The duplex mode can be both half or full duplex at 100 Mbps and full duplex only at 1000 Mbps. An auto-negotiating port can detect and adjust to the optimum Ethernet speed (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 straightthrough or crossover Ethernet cable. 38 XGS-4526/4528F/4728F User's Guide