Yealink WF40 Wi-Fi USB Dongle

The WF40 is a low-power, small unit that connects IP phones to the wireless network. Users can enjoy the WF40, which transmits 150 Mbps and is compliant with the IEEE802.11n and IEEE802.11b/g standards for maximum throughput.

The Yealink WF40 is a Wi-FI USB Dongle compatible with Yealink’s T4G/S Series as well as the Yealink T5 Series of phones. This plug-and-play dongle adds Wi-Fi capability to the phone. This device is suitable for small offices that can benefit from affordable, yet reliable,e high-speed wireless connectivity.

Product Features

High‑Speed Data Transmission

Delivers robust wireless performance with up to 150 Mbps throughput using IEEE802.11n standards, ensuring stable voice calls and efficient data delivery.

Plug‑and‑Play Compatibility

Connects instantly to supported Yealink T4, T4S, and T5 series phones via USB 2.0 with no additional drivers or power adapters required.

Broad Phone Compatibility

Works with SIP‑T27G, T29G, T46G/S, T48G/S, T41S, T42S, T52S, T54S, T53, T42U/T43U/T44U/T46U/T48U models—firmware update may be needed per model.

Low Power Consumption

Designed for energy efficiency, the dongle minimizes its impact on phone performance and conserves power.

Simple Deployment

Ideal for reducing cabling in office setups; automatically activates Wi‑Fi when Ethernet is disconnected.

Product Specifications

• Supports Yealink SIP-T27G/T29G/T46G/T48G/T41S/T42S/T46S/T48S/T52S/T54S
• For T48G: upgrade to version 35.80.0.95 or higher
• For T29G/T46G/T46S/T48S: upgrade to the version 81 or higher
• For T27G: upgrade to version 69.81.0.90 or higher
• Reliable Connection
• Ease-of-use
• Plug and Play
• High Transmission Rate
• Lower Power Consumption