Yealink WF40 Wi-Fi USB Dongle - IEEE 802.11b/g/n Wi-Fi 4 Adapter for IP Phones - USB 2.0 - 150 Mbit/s - 2.40 GHz - External
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Product Features
Technical Overview
The WF40 operates on the 2.40 GHz ISM band, a common frequency for Wi-Fi networks, ensuring broad compatibility with existing wireless infrastructure. Its Wi-Fi 4 certification provides a balance of performance and power efficiency, suitable for voice and data transmission on IP phones.
The adapter's external form factor and compact dimensions make it unobtrusive when connected to a phone. The USB 2.0 interface supplies both power and data connectivity, eliminating the need for an external power adapter.
Relevant factors for this section include Wi-Fi Generation, Wireless LAN Standard, ISM Band, Host Interface. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
A strong technical summary explains how the product's interfaces, hardware profile, and operating characteristics work together in real deployment. Buyers often need this context to confirm compatibility with existing devices, expected performance in daily use, and whether installation will be straightforward for IT staff or end users.
Key Product Advantages
This Wi-Fi adapter enhances deployment flexibility for Yealink IP phone systems by enabling wireless connectivity in environments where running Ethernet cables is challenging. Its design prioritizes reliability and low power consumption to maintain phone performance.
Plug-and-Play Simplicity
The WF40 requires no driver installation or complex setup. Simply connect the USB dongle to a compatible Yealink IP phone, and it automatically establishes a Wi-Fi connection, reducing deployment time and IT overhead.
Optimized for VoIP
With support for IEEE 802.11b/g/n standards and 150 Mbit/s throughput, the adapter provides sufficient bandwidth for clear voice calls and essential data traffic on IP phones, minimizing latency and packet loss.
Deployment / Use Cases
The Yealink WF40 is ideal for extending IP phone connectivity to locations without readily available Ethernet ports. It supports a range of Yealink SIP desk phone models, including the T27G, T29G, T46G, T48G, T41S, T42S, T46S, T48S, T52S, and T54S series.
Common deployment scenarios include temporary office setups, conference rooms, retail counters, hospitality environments, and home offices where wireless connectivity simplifies installation and reduces cabling costs. The adapter allows phones to be placed flexibly within Wi-Fi range without being tethered to a network jack.
Flexible Office Layouts
Enable IP phones in open-plan offices, hot-desking environments, or renovated spaces where adding Ethernet drops is costly or disruptive. The WF40 provides a wireless alternative that maintains voice quality.
Temporary or Mobile Setups
Support short-term deployments such as trade shows, event spaces, or temporary worksites where running cables is impractical. The adapter's compact size and easy installation make it suitable for quick setup and teardown.
Physical Profile
The WF40 features a small external form factor measuring 0.71 inches (18 mm) in width and 0.31 inches (8 mm) in height. Its compact design ensures it does not obstruct desk space or interfere with phone placement. The adapter connects directly to the phone's USB port, requiring no additional mounting hardware or external power supply.
The physical profile is practical for deployment planning because the dimensions and weight are clearly defined: 0.31" (8 mm), 0.71" (18 mm). This helps confirm rack, shelf, desk, or cabinet fit before installation.
- Width
- 0.71" (18 mm)
- Height
- 0.31" (8 mm)
Highlights
- Supports Yealink SIP-T27G/T29G/T46G/T48G/T41S/T42S/T46S/T48S/T52S/T54S IP phones
- IEEE 802.11b/g/n Wi-Fi 4 standard with 150 Mbit/s speed
- Operates on 2.40 GHz ISM band for broad compatibility
- USB 2.0 interface for plug-and-play connectivity
- External form factor with compact dimensions
- Lifetime limited warranty from Yealink
- Lower power consumption for efficient operation
- Enables wireless deployment in Ethernet-limited environments
Specifications
| Specifications | |
|---|---|
| Manufacturer | Yealink Network Technology Co., Ltd |
| Manufacturer Part Number | WF40 |
| Brand Name | Yealink |
| Product Model | WF40 |
| Product Name | WF40 Wi-Fi USB Dongle |
| Product Type | Wi-Fi Adapter |
| Technical Information | |
| Wi-Fi Generation | Wi-Fi 4 |
| Wireless LAN Standard | IEEE 802.11b/g/n |
| ISM Band | Yes |
| ISM Maximum Frequency | 2.40 GHz |
| Wireless Transmission Speed | 150 Mbit/s |
| Interfaces/Ports | |
| Host Interface | USB 2.0 |
| Physical Characteristics | |
| Form Factor | External |
| Height | 0.31" (8 mm) |
| Width | 0.71" (18 mm) |
| Miscellaneous | |
| Device Supported | IP Phone |
| Warranty | |
| Limited Warranty | Lifetime |
User Manual
FAQ
Which Yealink IP phone models are compatible with the WF40 adapter?
The WF40 supports a range of Yealink SIP desk phones, including the T27G, T29G, T46G, T48G, T41S, T42S, T46S, T48S, T52S, and T54S series. It is designed specifically for these models to provide reliable Wi-Fi connectivity without requiring additional configuration.
What Wi-Fi standards does the WF40 support?
The adapter supports the IEEE 802.11b/g/n Wi-Fi 4 standard, operating on the 2.40 GHz ISM band. This ensures compatibility with most common wireless routers and access points, delivering data transfer speeds up to 150 Mbit/s for voice and data traffic.
How do I install the WF40 Wi-Fi adapter on an IP phone?
Installation is plug-and-play. Connect the WF40's USB connector to an available USB port on a compatible Yealink IP phone. The phone will automatically detect the adapter and prompt you to configure Wi-Fi settings through the phone's interface, with no driver installation required.
What is the warranty coverage for the Yealink WF40?
Yealink provides a lifetime limited warranty for the WF40 Wi-Fi USB Dongle. This warranty covers defects in materials and workmanship for the product's lifetime, offering long-term assurance for deployments in business environments.
Can the WF40 be used with non-Yealink devices or computers?
The WF40 is specifically designed and tested for compatibility with supported Yealink IP phone models. It is not intended for use with computers, laptops, or other non-Yealink devices, as its functionality and drivers are optimized for the phone's operating system and hardware.
What are the physical dimensions of the WF40 adapter?
The WF40 has a compact external form factor measuring 0.71 inches (18 mm) in width and 0.31 inches (8 mm) in height. Its small size ensures it does not interfere with desk space or phone placement, making it suitable for discreet installation.
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