A dual band wireless adapter is a device that uses dual band Wi-Fi technology, allowing it to connect to networks operating on both the 2.4 GHz and 5 GHz wireless frequency bands.
As defined by the term dual band Wi-Fi, this technology simultaneously uses the 2.4 GHz and 5 GHz bands for wireless communication. Unlike traditional Wi-Fi networks which often only used the 2.4 GHz frequency band, a dual band adapter provides access to both.
What Does "Dual Band" Mean for an Adapter?
Having a dual band adapter means your device can:
- Connect to networks broadcasting on the standard 2.4 GHz band.
- Connect to networks broadcasting on the higher-speed 5 GHz band.
- Often switch between the bands automatically or allow manual selection, depending on the adapter and network setup.
Why Use Both Bands?
The availability of both frequency bands offers distinct advantages:
- 2.4 GHz Band:
- Offers a longer range.
- Is better at penetrating solid objects (walls, furniture).
- Is more prone to interference from other devices (microwaves, Bluetooth, etc.) because it's a more crowded band, especially since it was the primary band for traditional Wi-Fi.
- 5 GHz Band:
- Offers higher potential speeds.
- Generally has less interference due to more available channels and fewer devices using it.
- Has a shorter range and is less effective at passing through obstacles.
A dual band adapter allows you to leverage the benefits of each band based on your needs and network conditions, providing flexibility and potentially improved wireless performance compared to older, single-band adapters.
Types of Dual Band Adapters
Dual band wireless adapters come in various forms, including:
- USB Adapters: Small, external devices that plug into a USB port. Easy to use and portable.
- PCIe Cards: Internal cards installed directly onto a computer's motherboard, typically found in desktop computers.
- M.2 or Mini-PCIe Cards: Smaller internal cards often used in laptops.
Using a dual band adapter requires connecting to a dual band or tri-band router or access point, as the network itself must be broadcasting on these frequencies for the adapter to utilize them.
