# TP-Link UB400 Bluetooth 4.0 USB Adapter for PC

Enjoy wireless freedom with the TP-Link UB400 Bluetooth 4.0 USB Adapter for PC ideal for keyboards, mice, audio.

- [Original product page](https://www.ofertitastop.com/us/product/tp-link-ub400-bluetooth-usb-adapter)
- [View offer](https://www.ofertitastop.com/us/visit/tp-link-ub400-bluetooth-usb-adapter)
- Market: US
- Language: en-US
- Currency: USD
- Product updated: 2026-11-09T23:04:19.331Z
- Brand: TP-Link
- MPN: UB400
- EAN / GTIN: 6222051802370
- SKU: ofertitastop-us-15162
- Category: Electronics > Networking > Network Cards & Adapters
- Source store: amazon US
- Active deal: Yes
- Price: 7.99 USD
- Previous price: 11.99 USD
- Discount: 33%
- Rating: 4.4 / 5
- Reviews: 58964

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## Description

This tiny USB dongle turns a desktop or laptop into a Bluetooth-enabled machine for wireless keyboards, mice, headphones and file transfer. The TP-Link UB400 uses Bluetooth 4.0 and energy-saving features to keep connections stable while minimizing power use, making it a practical add-on for older PCs running Windows.

## Key Points

The adapter offers plug-and-play convenience for Windows 8, 8.1 and 10, while drivers are available for Windows 7 and XP according to the manufacturer. Its nano size lets you leave it in a USB port without it getting in the way. The device supports common Bluetooth profiles such as EDR and A2DP, which helps when streaming audio to wireless headsets and speakers. Consider that it is not compatible with macOS, Linux or smart TVs.

## Technical Specifications

- Name: **TP-Link UB400**
- Bluetooth version: Bluetooth 4.0
- Supported profiles: EDR, A2DP
- Compatibility: Windows 11/10/8.1/8/7/XP (driver required for Windows 7 and XP)
- Range: up to 18 meters (manufacturer specification)
- Size: nano USB form factor

## Usage Recommendations

Insert the adapter into any free USB port and allow Windows to recognize it automatically for immediate use on supported versions. For older Windows releases download the driver from the TP-Link support site before connecting if automatic installation does not occur. Keep in mind that Bluetooth performance depends on the host PC, nearby interference and the paired device capabilities, so moving closer to the PC can improve throughput for audio streaming. 😊

## Positive Aspects

This model is compact and unobtrusive, which makes it suitable for travel or permanent desktop use. It provides basic wireless connectivity for peripherals and audio without requiring internal hardware upgrades. The low-energy Bluetooth implementation helps reduce power draw on laptops. 🔌 🎧

## Images

![TP-Link UB400 Bluetooth 4.0 USB Adapter for PC — 1](https://www.ofertitastop.com/i/umucZrkzeV89mLJJwF9JYOnBcDJy1ZdmhaZHWkYv7IbnlKGgyLSdG1fxShgt_jlEFCnLIeUf32VBuDFFCmRjAmnZjEdD7ihomVnUze8l4uaUoIaLC1b6rgKf.jpg)

![TP-Link UB400 Bluetooth 4.0 USB Adapter for PC — 2](https://www.ofertitastop.com/i/DDX5yiZz8lbAaTq8jP38bwkn4_v2eZdOVtQR-_ELdE1ePRIuRearyunz2CKiRfhKvQ1702OBMIoS4fwjDDFV1Ir2P9e0YTE2oY9TTQbcITxVSB2FJnrDLPwd.jpg)

![TP-Link UB400 Bluetooth 4.0 USB Adapter for PC — 3](https://www.ofertitastop.com/i/bhVWBGpi81_N8gdQ0gcszd-NLH_dkOGWn3yfAWz6J5pZ4PId9740oi4yjJZh82GkhQ8Bql-JjUaXYBfxXLAbGGECZqgRSQfv2MxUGexwKNVy7cidBkZ0g3Jr.jpg)

![TP-Link UB400 Bluetooth 4.0 USB Adapter for PC — 4](https://www.ofertitastop.com/i/-oE455JmxB7jR90Jm5J8hyw0sbPIW_wFIaB5iSlQrxSn7bNaKeAMCdZBHElqzXXrx9nN81-Nhz12evtrEqtNcsMOLvRJPP3nenYjBh8otM5jnQkSmzFaFxXJ.jpg)

![TP-Link UB400 Bluetooth 4.0 USB Adapter for PC — 5](https://www.ofertitastop.com/i/BJ5Jtfjlgm08s8hX1C9FjZJ3H-2oC8Bb86RWJy_FrQjvR-52CJjERNdrzAom4oHrGlcLrmKbd6XTWtKhfGBj1RXVbLA28siLDdqGrucch2N_6WR_ak8Q1guX.jpg)