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Black plastic and metal USB 3.0 Wi-Fi adapter with two fixed antennas, 85 by 25 by 10 mm

YINGHUA

YINGHUA USB 3.0 Dual Band WiFi Adapter 1200Mbps with Antenna

SKU CH-6539-ENA9N

Adds dual-band Wi-Fi up to 1200 Mbps via USB 3.0 with two fixed 2 dB antennas

  • Dual-band 2.4 GHz and 5.8 GHz operation reduces interference
  • USB 3.0 interface enables up to 1200 Mbps combined throughput
  • Realtek 8812 chipset delivers 867 Mbps on 5.8 GHz band
  • Two 2 dBi fixed antennas improve signal reception
  • Compact 85 x 25 x 10 mm design fits desktop and laptop USB ports

What this USB WiFi adapter does

The YINGHUA USB 3.0 adapter adds dual-band 802.11ac wireless to a desktop or laptop. It uses a Realtek 8812 chipset and connects via a USB 3.0 port for high effective throughput. Two fixed 2dB aerials are included in the box.

Speed headroom on each band

The 2.4GHz band reaches up to 300Mbps while the 5.8GHz band reaches up to 867Mbps, giving a combined label rate of 1200Mbps. Real-world 5GHz performance peaks around 433Mbps with AC technology. Heavy multi-client loads or distant routers will push the link below those peaks.

Thermals noise and power draw

The plastic and metal housing measures 85x25x10mm and draws power directly from the USB 3.0 port. No fan is present so operation is silent. Warmth stays low during typical browsing or streaming; sustained maximum throughput may raise surface temperature slightly.

Highlights

  • Dual-band 2.4 GHz and 5.8 GHz operation reduces interference
  • USB 3.0 interface enables up to 1200 Mbps combined throughput
  • Realtek 8812 chipset delivers 867 Mbps on 5.8 GHz band
  • Two 2 dBi fixed antennas improve signal reception
  • Compact 85 x 25 x 10 mm design fits desktop and laptop USB ports

Specifications

No published specifications for this item yet.

Questions about this item

Will the USB 3.0 interface on this adapter work with the USB 2.0 ports on my older desktop?

The adapter uses a USB 3.0 connector that is backward compatible with USB 2.0 ports, though maximum throughput will be limited to the older port's speed.

How can I confirm the Realtek 8812 chipset is delivering the advertised 867 Mbps on the 5.8 GHz band?

After driver installation, check the wireless link speed in your OS network status; it should show up to 867 Mbps when connected to a compatible 5.8 GHz router.

Does the package include both 2 dB antennas and the driver CD, or do I need to buy them separately?

The box contains the wireless USB adapter, two 2 dB fixed aerials and a driver CD; no extra purchases are required for basic operation.

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