What is a Network Hub?
A network hub is a basic networking device that connects multiple wired LAN devices, providing additional Ethernet ports on your network. In its original (repeater hub) form, a hub simply copies every incoming data frame to every connected port, with no intelligence about where the data actually needs to go. Today, nearly every product marketed as a “hub” is actually a network switch (switching hub), which sends data only to the port where the destination device is connected. True repeater hubs are essentially obsolete, but the term “hub” persists in everyday language.
Understanding the distinction between a hub and a switch is useful background knowledge for anyone setting up a home or office network, because it explains why modern switches are so much more efficient than the simple hubs they replaced.
In-Depth
Repeater Hub vs. Switching Hub
The technical difference is straightforward but has significant performance implications:
| Feature | Repeater Hub | Switching Hub (Switch) |
|---|---|---|
| Data forwarding | Broadcasts to all ports | Sends to destination port only |
| Bandwidth efficiency | Low (shared among all ports) | High (dedicated per port) |
| Collisions | Frequent | None |
| Availability today | Virtually discontinued | Standard product |
Because a repeater hub shares bandwidth across all ports and generates collisions, it creates a bottleneck as more devices are added. A switch eliminates these problems entirely by learning MAC addresses and forwarding intelligently.
Common Use Cases
A Wi-Fi router typically offers three or four LAN ports. When you need to connect more wired devices, PCs, NAS units, game consoles, smart TVs, a switch (sold under the “hub” label) adds 5, 8, or more ports. You simply connect the switch to one of the router’s LAN ports with an Ethernet cable and plug your devices into the switch. Setup requires zero configuration.
Hub vs. Router
A hub (or switch) only expands the number of LAN ports; it does not assign IP addresses, manage internet connections, or provide firewall functionality. Those jobs belong to the router. The standard network topology is: internet – router – switch – devices. A USB hub is an unrelated device that expands USB ports, not network ports, despite the similar name.
How to Choose
1. Buy a Few Extra Ports
Count the devices you need to connect today, then add two or three spare ports for future expansion. Five-port and eight-port models are the most common sizes for home use and cost very little.
2. Insist on Gigabit Speed
The price difference between a 100 Mbps and a Gigabit (1 Gbps) switch is negligible, yet the speed difference is tenfold. Always choose at least Gigabit. If you use a NAS or transfer large files frequently, a 2.5 Gbps switch is worth considering.
3. Prefer Metal, Fanless Designs
A metal chassis dissipates heat more effectively than plastic, improving long-term reliability. Fanless models run completely silent, making them suitable for living rooms, bedrooms, and open-plan offices.
The Bottom Line
Although the word “hub” has stuck around, the devices you buy today are actually network switches, vastly more efficient than the repeater hubs of the past. Their job is simple: give you more wired LAN ports so every device in your home or office can enjoy a fast, stable connection. Choose a Gigabit or faster model with a few extra ports beyond your current needs, pick a silent metal-body design, and your network expansion is done, no configuration required.
Recommended Products
Today’s network “hubs” are all switching hubs (Layer 2 switches) that eliminate collisions and enable full gigabit speeds. Here are three reliable plug-and-play models.
| Product | Ports | Price Range |
|---|---|---|
| TP-Link TL-SG108 | 8-port Gigabit | ~¥2,500 |
| NETGEAR GS308 | 8-port Gigabit | ~¥3,500 |
| BUFFALO LSW6-GT-8NS | 8-port Gigabit | ~¥3,000 |
TP-Link TL-SG108 (8-Port Gigabit Switch)
Best value. Perfect for budget-conscious buyers. This TP-Link 8-port gigabit switch is one of the world’s best-selling unmanaged switches. Plug in and it works — no configuration required. The steel chassis is durable and the fanless design is completely silent. Energy-efficient with automatic detection of cable length and device speed.
NETGEAR GS308 (8-Port Gigabit Switch)
Top user satisfaction. A reliable choice. NETGEAR’s popular compact gigabit switch with a metal chassis for durability. Auto-senses each port at 10/100/1000 Mbps and supports full-duplex on all ports. Plug-and-play with no setup needed. Suitable for desktops or rack-mounting in home and small office environments.
BUFFALO LSW6-GT-8NS (8-Port Gigabit Switch)
Amazon bestseller. The most popular choice right now. BUFFALO’s well-known gigabit switching hub includes a built-in magnet for wall mounting. Silent fanless design is ideal for 24/7 operation in living rooms or home offices. Zero configuration required — just connect LAN cables and go.
Summary
Network switching hubs are the simplest way to expand the number of LAN ports and connect multiple devices. If you are unsure which to choose, the TP-Link TL-SG108 is our top recommendation — exceptional value, no configuration needed, and immediate gigabit connectivity for your whole setup.