TP-Link UB4A Bluetooth 4.0 Nano USB Adapter

Description

The TP-Link UB4A Bluetooth 4.0 Nano USB Adapter is an ultra-compact adapter designed to add Bluetooth 4.0 with Low Energy (BLE) connectivity to non-Bluetooth USB-A devices, such as laptops and desktops. It enables wireless connections with up to 7 Bluetooth devices, including headsets, speakers, keyboards, mice, printers, game controllers (e.g., PS4/Xbox for PC use), and smartphones/tablets, supporting tasks like music playback, data transfer, and video calls. The adapter is backward compatible with Bluetooth 3.0/2.1/2.0/1.1, ensuring broad device support. It offers a transmission range of up to 20m in environments with minimal obstructions, though range may reduce in crowded settings.

The plug-and-play functionality provides driver-free setup for Windows 11/10/8.1/8, while Windows 7/XP requires drivers from TP-Link’s website (https://www.tp-link.com/download/UB4A.html). It does not support macOS, Linux, or TVs, and internal Bluetooth must be disabled to avoid conflicts. The nano-sized design (14.8 × 6.8 × 18.9 mm, ~10g) allows it to remain plugged in without obstructing ports, making it ideal for travel or home use. Reviews praise its compact size, reliable connectivity, and ease of use, though some users report occasional pairing issues with certain devices (e.g., specific headsets) and limited range in dense environments. The adapter uses a Realtek chipset (inferred from similar models) for stable performance.

Compared to the Archer T2UB Nano (AC600, Wi-Fi 5 + Bluetooth 4.2), the UB4A is Bluetooth-only, lacking Wi-Fi but offering similar Bluetooth performance. Unlike the Archer TX10UB Nano (Wi-Fi 6, Bluetooth 5.3), it uses older Bluetooth 4.0 and lacks macOS support. Compared to the UH7020C (7-in-1 hub), it focuses solely on Bluetooth connectivity. It’s ideal for Windows users needing a simple, portable Bluetooth solution for peripherals and audio devices.

Specifications

• Host Interface: USB 2.0 Type-A (480Mbps)

• Bluetooth Version: 4.0 with Low Energy (BLE), backward compatible with 3.0/2.1/2.0/1.1

• Bluetooth Devices: Supports up to 7 devices (e.g., headsets, keyboards, mice, controllers, printers)

• Chipset: Realtek (inferred, likely RTL8761B or similar)

• Transmission Range: Up to 20m (in open environments with few obstructions)

• Compatibility: Windows 11/10/8.1/8/7/XP (32/64-bit)

• Plug-and-Play: Yes, driver-free for Windows 11/10/8.1/8; drivers required for Windows 7/XP

• Power Supply: USB bus-powered (no external adapter)

• Dimensions: 14.8 × 6.8 × 18.9 mm (0.58 × 0.27 × 0.74 in)

• Weight: 0.35 oz (10g, estimated)

• Certifications: FCC, CE, RoHS

• Operating Temperature: 0°C to 40°C (32°F to 104°F)

• Storage Temperature: -40°C to 70°C (-40°F to 158°F)

• Operating Humidity: 10%–90% (Non-Condensing)

• Storage Humidity: 5%–90% (Non-Condensing)

• Package Contents: UB4A Bluetooth 4.0 Nano USB Adapter, Quick Installation Guide