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Square white polycarbonate WiFi 7 client adapter with 0.96 inch status display

Ubiquiti Networks

Ubiquiti UniFi AirWire WiFi 7 Client Adapter (AirWire-US)

SKU CH-K4C2-V40VW

High-performance WiFi 7 client adapter with STR MLO for ultra-low latency, extended range and multi-gigabit speeds

  • Wireless speedBW320
  • Radio bands2.4 GHz / 5.8 GHz
  • Simultaneous full-duplex links via STR MLO for ultra-low latency
  • True multi-gigabit real-world speeds up to 5.8 Gbps on 6 GHz
  • Extended range with 11 dBi antenna gain on both bands
  • Flexible USB PD power at 15 W normal or 20 W performance mode
  • Compact 117 x 117 x 42.5 mm polycarbonate enclosure with 0.96" status display

WiFi 7 client adapter with STR MLO

The Ubiquiti UniFi AirWire is a high-performance WiFi 7 client adapter that uses STR MLO to create simultaneous full-duplex links. It targets users who need ultra-low latency and true multi-gigabit real-world speeds over a wireless connection. The device connects via a 5 GbE port using USB3.2 Gen2 and is managed through a USB-C interface with a 0.96" status display.

Bandwidth and channel constraints

Practical throughput is limited by the available channel bandwidths of HT 20/40, VHT 20/40/80/160, HE 20/40/80/160 and EHT 20/40/80/160/240/320. The adapter operates on 2.4 GHz and 5.8 GHz frequency bands with a maximum data rate of 5.8 Gbps at BW320 on 6 GHz and 4.3 Gbps at BW240 on 5 GHz. Regulatory limits on transmit power and channel availability will affect real-world performance in any given location.

Capacity headroom and limits

The adapter comfortably handles demanding workloads with supported data rates from 7.3 Mbps up to 5.8 Gbps across WiFi 7, WiFi 6 and WiFi 5 standards using 2x2 MIMO on both 6 GHz and 5 GHz bands. It draws up to 18W in hardware with USB PD power options of 15W in normal mode and 20W in performance mode. Buyers needing wired uplink redundancy or more than two spatial streams per band should consider alternative architectures.

How it compares

Measured against everything we stock in Wi-Fi Cards & USB Adapters, at today’s prices. Recalculated every night.

Price $184.99
Pricier than about 91% of the 1,565 comparable items (median $18.99).

Specifications

Connectivity
Wireless speedBW320
Radio bands2.4 GHz / 5.8 GHz

Questions about this item

Is the AirWire-US available in different performance modes?

The adapter runs in Normal mode at 15W USB PD or Performance mode at 20W USB PD, both using 5/9/12V profiles.

What real-world throughput does the 5.8 Gbps 6 GHz figure deliver?

That 5.8 Gbps peak uses 320 MHz channels and 2x2 MIMO; actual speeds depend on AP capability, channel width and interference.

How does the 5 GbE USB3.2 Gen2 port limit wired throughput?

The single 5 GbE port caps wired traffic at 5 Gbps, so multi-gigabit wireless links above that rate will be bottlenecked by the Ethernet link.

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