Having fast internet at home involves more than just the plan you get from your ISP; you should understand what options your router provides to get the best possible performance. Part of that is knowing which Ethernet ports to use on your router, with one of the available choices potentially being 2.5G Ethernet.
A standard Ethernet port, which may be marked as LAN or have no label, typically maxes out at a speed of 1 Gbps. Meanwhile, a 2.5G port can provide speeds of up to 2.5 Gbps. These will be marked accordingly on your router, with a label in the vein of 2.5G or 2.5GbE. Ports capable of those zippier speeds might also use a different color than the basic ones.
There are a couple of requirements for being able to take advantage of a 2.5 Gbps port. In addition to your router needing this, your computer or other connected device must also have a 2.5 Gbps port. You'll also need a compatible Ethernet cable; Cat5e and anything newer are all equipped to deliver 2.5Gbps speeds. Anything limited to an older standard will become a bottleneck.
5 Gbps. Otherwise, downloading and uploading data from the internet will be capped at the level of your ISP plan. However, even with slower internet, you can still take advantage of the faster speeds with devices on your local network. 5 Gbps if all devices are compatible.
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