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Small black USB dongle with fold-up 5dBi antenna

KINGARD

KINGARD BU03 Bluetooth 5.3 USB Adapter 5dBi 492FT

SKU CH-0E9G-P586Q

Adds Bluetooth 5.3 to Windows PCs with a 5dBi antenna reaching up to 492 ft outdoors and 3 Mbps EDR speed

  • TypeUSB Wi-FI Adapter
  • Bluetooth 5.3 with EDR and BLE cuts latency for responsive audio and input
  • EDR reaches 3 Mbps, doubling Bluetooth 4.2 throughput for quicker file transfers
  • 5 dBi external antenna plus Class I radio extends open-area range to 492 ft
  • Plug-and-play on Windows 11, 10, 8.1 and 7 with no driver install needed
  • Adds Bluetooth to legacy desktops and laptops lacking built-in wireless support

KINGARD BU03 Bluetooth 5.3 Adapter

The KINGARD BU03 is a USB Bluetooth 5.3 adapter designed for Windows PCs running Windows 11, 10, 8.1 or 7. It adds Bluetooth connectivity to desktops or laptops that lack built-in wireless support. The adapter uses Bluetooth 5.3 with EDR and BLE to deliver a stable link for audio, input devices and file transfers. It is a new product supplied in its original packaging.

5dBi External Antenna Range

A built-in 5dBi external antenna combined with Class I RF design extends the usable range to 328FT or 100M up to 492FT or 150M in open areas. The hardware supports EDR transmission rates up to 3Mbps, twice the throughput of Bluetooth 4.2. Walls, obstructions and 2.4GHz radio interference will reduce the effective distance in real-world use.

Windows-Only Bluetooth Upgrade

This adapter suits users who want to add Bluetooth headsets, speakers, keyboards or mice to a Windows computer without internal Bluetooth. It does not support macOS, so Mac owners should look elsewhere. Buyers needing Wi-Fi capability or a combined Wi-Fi and Bluetooth module will need a different product.

Highlights

  • Bluetooth 5.3 with EDR and BLE cuts latency for responsive audio and input
  • EDR reaches 3 Mbps, doubling Bluetooth 4.2 throughput for quicker file transfers
  • 5 dBi external antenna plus Class I radio extends open-area range to 492 ft
  • Plug-and-play on Windows 11, 10, 8.1 and 7 with no driver install needed
  • Adds Bluetooth to legacy desktops and laptops lacking built-in wireless support

Specifications

TypeUSB Wi-FI Adapter

Questions about this item

Will the external 5dBi antenna need replacement after extended use?

The 5dBi external antenna is built into the BU03 dongle and is not designed to be user-replaceable; no periodic antenna maintenance is required.

What throughput limit appears first during continuous file transfers?

The EDR link tops out at 3 Mbps, so sustained bulk transfers will hit that ceiling before any other bottleneck.

How much power does the adapter draw when left plugged in all day?

The BU03 draws only the standard USB port current needed for Bluetooth 5.3 Class I operation; no separate power supply is required.

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