TP-Link TL-WN781ND Wireless PCI Express N Adapter

The TP-Link TL-WN781ND is a compact, high-performance wireless adapter designed to bring fast, stable Wi-Fi connectivity to desktop computers through a PCI Express interface. Built for compatibility with all standard PCI Express slots (x1, x2, x8, x16), this adapter supports wireless speeds up to 150 Mbps and complies with IEEE 802.11n, offering a stronger signal and broader range than legacy 802.11g devices. Ideal for everyday internet tasks such as web browsing, video streaming, online gaming, and VoIP calls, the TL-WN781ND ensures a secure and responsive wireless experience. With easy setup, advanced WPA/WPA2 encryption, and a detachable 2dBi antenna for flexible positioning, it’s a reliable solution for upgrading any desktop PC to wireless.

Product Features

High-Speed Wireless N Performance

With wireless speeds up to 150 Mbps, the TL-WN781ND enables smooth internet browsing, HD video streaming, and stable online gaming experiences without lag or buffering.

PCI Express Interface for Broad Compatibility

The adapter uses a PCI Express interface for improved performance, bandwidth, and compatibility. It fits into any standard PCI Express slot, including x1, x2, x8, and x16, making it easy to install in most desktop PCs.

Strong Signal and Extended Range

Complying with IEEE 802.11n standards and equipped with MIMO technology, the adapter delivers enhanced range and stable connections even through walls or other obstructions.

Secure Wireless Connection

Supports 64/128-bit WEP, WPA, and WPA2 encryption standards to keep your wireless network protected from unauthorized access.

Easy Installation and Management

The bundled utility software simplifies the installation process and provides easy management of your wireless settings, including network discovery and connection setup.

Product Specifications

• Interface: PCI Express (x1)
• Dimensions: 120.8 × 78.5 × 21.5 mm (4.8 × 3.1 × 0.8 in)
• Antenna Type: Detachable omnidirectional (RP-SMA)
• Antenna Gain: 2dBi
• Wireless Standards: IEEE 802.11n, IEEE 802.11g, IEEE 802.11b
• Frequency: 2.400–2.4835 GHz
• Signal Rate:
  • 11n: Up to 150 Mbps (dynamic)
  • 11g: Up to 54 Mbps (dynamic)
  • 11b: Up to 11 Mbps (dynamic)
• Reception Sensitivity:
  • 130M: -68 dBm @ 10% PER
  • 108M: -68 dBm @ 10% PER
  • 54M: -68 dBm @ 10% PER
  • 11M: -85 dBm @ 8% PER
  • 6M: -88 dBm @ 10% PER
  • 1M: -90 dBm @ 8% PER
• Transmit Power: <20 dBm (EIRP)
• Wireless Modes: Ad-Hoc / Infrastructure
• Wireless Security: 64/128-bit WEP, WPA-PSK, WPA2-PSK
• Modulation Technology: DBPSK, DQPSK, CCK, OFDM, 16-QAM, 64-QAM
• Operating System Support:
  • Windows 11
  • Windows 8.1/8 (32/64-bit)
  • Windows 7 (32/64-bit)
  • Windows Vista (32/64-bit)
  • Windows XP (32/64-bit)
• Certifications: FCC, RoHS
• Package Contents:
  • TL-WN781ND Wireless Adapter
  • Detachable omnidirectional antenna
  • Resource CD
  • Quick installation guide
• Operating Temperature: 0°C–40°C (32°F–104°F)
• Storage Temperature: -40°C–70°C (-40°F–158°F)
• Operating Humidity: 10%–90% non-condensing
• Storage Humidity: 5%–90% non-condensing