TP‑Link UB400 is best for wireless headsets, keyboards, mice, speakers, game controllers, and more.
With this adapter, you can make your PC or laptop Bluetooth‑enabled in seconds.
Key Specifications
- Standards & Protocols: Bluetooth 4.0 (with low‑energy BLE) — backward compatible with Bluetooth V3.0 / 2.1 / 2.0 / 1.1.
- Interface: USB 2.0
- Dimensions (W × D × H): 0.58 × 0.27 × 0.74 in (14.8 × 6.8 × 18.9 mm)
- Operating Range: Up to approximately 10 m (environment dependent)
- Supported Operating Systems: Windows 10 / 8.1 / 8 / 7 / XP (for Windows 8/8.1/10 plug‑and‑play; Windows 7 driver download required)
- Environment: Operating temperature 0 °C–40 °C; storage temperature ‑40 °C–70 °C; operating humidity 10%–90% non‑condensing
- Package Contents: UB400 Bluetooth 4.0 Nano USB Adapter + Quick Installation Guide
Features – Why It’s Great
- Bluetooth 4.0 connectivity: Adds modern Bluetooth support and low‑energy BLE functionality to PCs or laptops that don’t already have it.
- Backward compatible: Works with older Bluetooth versions, so you won’t have compatibility issues with older peripherals.
- Nano‑sized design: Ultra‑small adapter that plugs into a USB port and can stay there without blocking adjacent ports or getting in the way — ideal for laptops or desktops.
- Plug‑and‑play for most systems: For Windows 8, 8.1, and 10 you can plug it in and use it right away without needing to hunt for drivers.
- Convenient wireless range: With up to roughly 10 m of operation, you can move around your workspace without losing device connectivity.
- Versatile device connection: Supports connection of headsets, keyboards, mice, game controllers, printers, smartphones/tablets, and more via Bluetooth—making your PC a wireless hub.
Typical Uses – Where You Can Use It
- On a desktop PC that doesn’t have built‑in Bluetooth, to can connect wireless headphones or speakers.
- On a laptop to add or upgrade Bluetooth capability, enabling connection to a wireless mouse, keyboard, or game controller.
- For file transfer between your PC and Bluetooth‑enabled smartphone or tablet without needing cables.
- In a home‑office or remote‑work setup where you want to reduce cable clutter and connect Bluetooth headsets or conferencing gear.
- On a compact PC or mini‑PC where space is tight and a small “plug‑and‑leave” adapter is ideal.
Why You Need It
TP‑Link UB400 adapter gives your computer lacks Bluetooth or has an older version of Bluetooth. It gives you a simple, affordable way to add modern Bluetooth connectivity in seconds. The best part is that this adapter helps you to plug in Bluetooth devices—headsets, speakers, keyboards, mice—without hassle or wires. For anyone working with wireless peripherals or seeking a cleaner, cable‑free workspace, this adapter is a smart add‑on.

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