Chapter 1 Introducing the Zyxel Device
AX/DX/EX/PX Series User’s Guide
24
Figure 4 Triple-Band Application
1.2.4 Multi-Gigabit Ethernet
For Zyxel Devices that support 10 Gbps/2.5 Gbps Multi-Gigabit Ethernet (GbE) WAN/LAN ports, the port
speeds are backward compatible with standard Gigabit speed. The Zyxel Devices with an SFP port can
also provide Internet access through a Multi-Gigabit GPON WAN or Ethernet connection.
A 2.5 Gigabit Ethernet port supports speeds of 2.5 Gbps if the connected device supports 2.5 Gbps.
While a 10 Gigabit Ethernet port supports speeds of 10 Gbps if the connected device supports 10 Gbps
and a Cat 6a (up to 100 m) or Cat 6 cable (up to 50 m) is used.
Some network devices such as gaming computers, servers, network attached storage (NAS) devices, or
access points may have network cards that are capable of 2.5 Gbps or 5 Gbps connectivity.
If these devices are connected to a 1 Gbps or 10 Gbps Ethernet port, they can only transmit or receive
up to 1 Gbps as speeds of 2.5 Gbps / 10 Gbps cannot be attained. Moreover, if network devices with 2.5
Gbps / 10 Gbps network cards are connected to a 2.5 Gbps / 10 Gbps Ethernet port, you must use Cat
5e / Cat 6A or better Ethernet cables to achieve 2.5 Gbps / 10 Gbps speeds. Most buildings, at the time
of writing, use Cat 5e or Cat 6 Ethernet cables.
Multi-Gigabit Ethernet ports automatically allow connections up to the speed of the connected network
device (100 Mbps (not supported on EX5501-B0), 1 Gbp s, 2.5 Gbps or 5 Gbps), and you just need to use
a Cat 5, Cat 5e or Cat 6 Ethernet cable.
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