Networking Hardware
Run a Speed TestEvery piece of hardware in a home or office network explained — what it does, how it differs from similar devices, and when you need it. Start with a speed test to see how your hardware performs.
Routers, Modems, and Gateways
What Is a Router?
The device that directs traffic between your home network and the internet — and between devices inside your home.
What Is a Modem?
The device that connects your home to your ISP's network by translating between their signal and your ethernet.
Router vs Modem
Two devices that are often confused — or combined — but perform completely different jobs in your network.
What Is a Gateway Device?
A modem and router combined in one box — what your ISP provides and whether you should replace it.
What Is DOCSIS?
The standard that governs how cable modems communicate with your ISP — and why the version number matters.
Switches and Hubs
What Is a Network Switch?
The device that connects multiple wired devices on a local network and forwards frames only to the right port.
Managed vs Unmanaged Switch
The difference between a plug-and-play switch and one you can configure — and which one you actually need.
Switch vs Hub
Hubs broadcast to every port; switches are smarter — why hubs are obsolete and what replaced them.
Wireless Hardware
What Is a Wireless Access Point?
A dedicated Wi-Fi transmitter that extends coverage without the routing and NAT functions of a router.
What Is a Mesh Network?
How multiple nodes work together to blanket a home in Wi-Fi without dead zones or separate SSIDs.
What Is a Wi-Fi Extender?
A device that rebroadcasts an existing Wi-Fi signal to extend range — and its tradeoffs versus a mesh system.
Access Point vs Wi-Fi Extender
Two ways to expand Wi-Fi coverage — and why a wired access point almost always beats a wireless extender.
Cables and Physical Layer
Ethernet Cable Types: Cat5e, Cat6, Cat6a, Cat7, Cat8
Which category cable you need and what the speed and shielding differences actually mean in practice.
Fiber vs Ethernet Cable
Glass vs copper — how fiber optic and ethernet cables differ in speed, distance, and use case.
What Is PoE (Power over Ethernet)?
How ethernet cables can carry both data and electrical power — used for access points, cameras, and phones.
Other Network Hardware
What Is a Firewall Appliance?
Hardware that inspects and filters network traffic — and how it differs from the software firewall on your OS.
What Is a Powerline Adapter?
Networking over your home's electrical wiring — how it works, its speed limits, and when to use it.
What Is a NIC?
The hardware component in every device that connects it to a network — wired or wireless.
What Is a UPS?
How uninterruptible power supplies protect servers and NAS devices from outages and voltage spikes.
Fiber Media Converter Explained
Bridge fiber optic and copper Ethernet to extend network runs beyond 100 m.
What Is Link Aggregation (LACP)?
Bond multiple Ethernet ports into one logical link for higher throughput and redundancy.
PoE Injector vs PoE Switch
When to use a single-port PoE injector vs replacing your switch with a PoE-capable model.
USB to Ethernet Adapter Guide
Types, speeds, and compatibility for USB 3.0 gigabit and USB-C 2.5 GbE adapters.