What This Product Does
TP-LINK TL-WN781ND is designed to provide a complete end-to-end wireless performance from the server or server backbone to the switch infrastructure and down through to the desktop with the PCI Express connector. TL-WN781ND Wireless N PCI Express(x1) Adapter provides a wider compatibility, fitting with any standard PCI Express slot, x1, x2, x8, or x16. Compared with standard PCI network cards, it offers increased bandwidth, reliability and more functionality, allowing you to enjoy a fast and advanced connection, such as downloading, making internet call and video streaming.
Wireless N – Speed & Range
Complying with the IEEE 802.11n standard, TL-WN781ND can easily establish a wireless network and get up to 9X the speed and 4X the range of conventional 11g products. Compared with legacy 54M products, TL-WN781ND delivers performance enhancements, allowing you to have a more joyful surfing experience, including sharing files, watching streaming media.
Key Features
Up to 150Mbps wireless transmission rate
Provides PCI Express interface
Advanced secure connection with WPA/WPA2 encryption
Bundled utility enables easy management
Specification
Hardware Features
Interface    PCI Express
Dimensions ( W x D x H ) Â Â Â 4.8 x 3.1 x 0.8in. (120.8 x 78.5 x 21.5mm)
Antenna Type    Detachable Omni Directional (RP-SMA)
Antenna Gain    2dBi 
Wireless Features
Wireless Standards    IEEE 802.11n, IEEE 802.11g, IEEE 802.11b
Frequency    2.400-2.4835GHz
Signal Rate    11n: Up to 150Mbps(dynamic)
11g: Up to 54Mbps(dynamic)
11b: Up to 11Mbps(dynamic)
Reception Sensitivity    130M: -68dBm@10% PER
108M: -68dBm@10% PER
54M: -68dBm@10% PER
11M: -85dBm@8% PER
6M: -88dBm@10% PER
1M: -90dBm@8% PER
Transmit Power    <20dBm(EIRP)
Wireless Modes    Ad-Hoc / Infrastructure mode
Wireless Security    Support 64/128 bit WEP, WPA-PSK/WPA2-PSK
Modulation Technology    DBPSK, DQPSK, CCK, OFDM, 16-QAM, 64-QAM
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