TP-Link 150Mbps Wireless N PCI Express Adapter

TP-Link 150Mbps Wireless N PCI Express Adapter


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TP-Link 150Mbps Wireless N PCI Express Adapter

The TP-Link 150Mbps Wireless N PCI Express Adapter (model number TL-WN781ND) is a network interface card designed to provide a high-speed wireless connection for desktop computers. Here’s a detailed description of its features and specifications:

Key Features:

  1. Wireless N Speed up to 150Mbps:
    • The adapter supports IEEE 802.11n standard, delivering wireless data transfer rates up to 150Mbps, making it ideal for online gaming, video streaming, and VoIP calls.
  2. PCI Express Interface:
    • The card is designed to fit into any standard PCI Express slot, providing a stable and reliable connection with enhanced bandwidth compared to traditional PCI cards.
  3. External Detachable Antenna:
    • It features a 2dBi detachable omnidirectional antenna, which can be adjusted or replaced with higher gain antennas for better signal reception and transmission range.
  4. Advanced Security:
    • Supports multiple encryption protocols including WEP (64/128-bit), WPA, WPA2, WPA-PSK, and WPA2-PSK, ensuring robust security for wireless connections.
  5. WPS (Wi-Fi Protected Setup):
    • Simplifies the setup process by allowing quick and secure wireless connection setup with the push of a WPS button, eliminating the need to remember complex passwords.
  6. Compatibility:
    • Compatible with a wide range of operating systems, including Windows XP, Vista, 7, 8, and 10, ensuring broad usability across different computer setups.

Technical Specifications:

  • Wireless Standards:
    • IEEE 802.11n, IEEE 802.11g, IEEE 802.11b.
  • Frequency Range:
    • 2.400-2.4835GHz.
  • Wireless Transmit Power:
    • <20dBm (EIRP).
  • Reception Sensitivity:
    • 150M: -68dBm@10% PER.
    • 54M: -68dBm@10% PER.
    • 11M: -85dBm@8% PER.
    • 6M: -88dBm@10% PER.
    • 1M: -90dBm@8% PER.
  • Antenna:
    • 2dBi detachable omnidirectional antenna.
  • Data Modulation Types:
    • DBPSK, DQPSK, CCK, OFDM, 16-QAM, 64-QAM.
  • LED Indicators:
    • Link/Activity.

Package Contents:

  • TP-Link TL-WN781ND 150Mbps Wireless N PCI Express Adapter.
  • Low-profile bracket.
  • Resource CD with drivers and utility software.
  • Quick Installation Guide.

Dimensions and Weight:

  • Dimensions:
    • 4.8 x 4.8 x 0.8 inches (12.1 x 12.1 x 2.1 cm).
  • Weight:
    • Approximately 1.5 ounces (42.5 grams).

Use Cases:

  • Home Networking:
    • Enhance the wireless capabilities of desktop computers, allowing for seamless streaming, browsing, and online communication.
  • Small Office/Home Office (SOHO):
    • Suitable for small office setups needing a stable and secure wireless network connection without extensive cabling.
  • Gaming:
    • Provides sufficient speed and reliability for online gaming applications.


The TP-Link 150Mbps Wireless N PCI Express Adapter is a versatile and reliable networking solution for desktop computers. With its easy installation, robust security features, and flexible antenna design, it provides a stable and secure wireless connection suitable for a wide range of applications from everyday web browsing to more demanding online gaming and streaming. Its compatibility with multiple operating systems and the inclusion of a low-profile bracket make it adaptable to various desktop setups.


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