ZyXEL Communications XGS-4526 User Manual

Chapter 3 Hardware Overview

XGS-4526/4528F/4728F User’s Guide

The following table describes the ports. 

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.

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 straight-
through or crossover Ethernet cable.

Table 1   Panel Connections 

20 100/1000 
Mbps RJ-45 
Ethernet 
Ports (XGS-
4526 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.