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The TP-Link WN781ND is a wireless network adapter compatible with standard PCI Express slots: x1, x2, x8, or x16. It operates in the 2.4 GHz band and is compatible with IEEE 802.11 b/g/n standards. It utilizes single polarization (SISO / single-chain), and the maximum theoretical throughput is 150 Mbps. The device is equipped with one external omnidirectional antenna with an energy gain of 2 dBi. The antenna is detachable (RP-SMA connector); if necessary, it can be replaced with another product offering higher gain.

Stable Wireless Connections Won't Let You Get Bored
The TL-WN781ND is a device that offers greater throughput, functionality, and a higher level of reliability than standard PCI network cards. Wireless connection speeds reach up to 150 Mbps, so your experiences in the world of the Internet can be even more enjoyable, and sharing files and watching streamed videos won't cause you any problems.
An Antenna That Adjusts to You
The TL-WN781ND network card is equipped with a detachable antenna, whose direction can be fully adjusted to the surrounding conditions. To increase network range, it can be replaced with a directional antenna, among others.


Specifications
| WN781ND | |
| HARDWARE FEATURES | |
|---|---|
| Interface | PCI Express |
| Dimensions ( W x D x H ) | 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 |
| OTHERS | |
| Certification | CE, FCC, RoHS |
| Package Contents | Wireless Adapter Detachable Omni directional antenna Resource CD Quick Installation Guide |
| System Requirements | Windows XP/Vista/7/8/8.1/10(32/64bits) |
| Environment | Operating Temperature: 0℃~40℃ (32℉~104℉) Storage Temperature: -40℃~70℃ (-40℉~158℉) Operating Humidity: 10%~90% non-condensing Storage Humidity: 5%~90% non-condensing |





