| Technical details | |
| Compliance certificates | RoHS, Federal Communications Commission (FCC), CE |
| System requirements | |
| Compatible operating systems | Win 98SE, ME,2000,XP 32 bit/64 bit, Vista 32 bit/64 bit, 7 32 bit/64 bit |
| Windows operating systems supported | Windows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 IoT Enterprise, Windows 10 Pro, Windows 10 Pro x64, Windows 10 x64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 7 x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64, Windows 8.1, Windows 8.1 Enterprise, Windows 8.1 Enterprise x64, Windows 8.1 Pro, Windows 8.1 Pro x64, Windows 8.1 x64, Windows Vista, Windows Vista Business, Windows Vista Business x64, Windows Vista Enterprise x64, Windows Vista Home Basic, Windows Vista Home Basic x64, Windows Vista Home Premium, Windows Vista Home Premium x64, Windows Vista Ultimate, Windows Vista Ultimate x64, Windows Vista x64, Windows XP, Windows XP Home, Windows XP Home x64, Windows XP Professional, Windows XP Professional x64 |
| Linux operating systems supported | ![]() |
| Ports & interfaces | |
| Interface | WLAN |
| Connectivity technology | Wireless |
| Host interface | PCI Express |
| Weight & dimensions | |
| Height | 21.5 mm |
| Width | 120.8 mm |
| Depth | 78.5 mm |
| Operational conditions | |
| Operating relative humidity (H-H) | 10 - 90% |
| Storage temperature (T-T) | -40 - 70 °C |
| Operating temperature (T-T) | 0 - 40 °C |
| Storage relative humidity (H-H) | 5 - 90% |
| Networking | |
| Wi-Fi standards | 802.11b, 802.11g |
| Security algorithms | 128-bit WEP, 64-bit WEP, WPA-PSK, WPA2-PSK |
| Maximum data transfer rate | 150 Mbit/s |
| Ethernet LAN | ![]() |
| Modulation | 16-QAM, 64-QAM, CCK, DBPSK, DQPSK, OFDM |
| Networking standards | IEEE 802.11b, IEEE 802.11g, IEEE 802.11n |
| Bluetooth | ![]() |
| Wi-Fi | ![]() |
| WLAN data transfer rates supported | 11,54,150 Mbit/s |
| Frequency range | 2.4 - 2.4835 GHz |
| Wi-Fi band | Single-band (2.4 GHz) |
| Top Wi-Fi standard | Wi-Fi 4 (802.11n) |
| Packaging data | |
| Package weight | 150 g |
| Package depth | 150 mm |
| Package height | 39 mm |
| Package width | 200 mm |
| Packaging content | |
| Quick installation guide | ![]() |
| Resource CD | ![]() |
| Other features | |
| Dimensions (WxDxH) | 78.5 x 120.8 x 21.5 mm |
| Compliance industry standards | IEEE 802.11b/g/n |
| Gain | 2 dBi |
| Link/Act LED | ![]() |
| Antennas quantity | 1 |
| Design | |
| Internal | ![]() |
| Certification | CE, FCC |
| Chipset | Atheros |
| Antenna type | Omni-Directional |
| Product colour | Green |
| Antenna gain level (max) | 2 dBi |
| Antenna connector type | RP-SMA |
| Antenna | Yes |
| Component for | PC |
| Operating modes | Infrastructure mode |
| Antenna direction type | Omni-directional |
| Antenna design | External |
| Logistics data | |
| Harmonized System (HS) code | 85176990 |
| Sustainability | |
| Sustainability compliance | ![]() |
| Sustainability certificates | RoHS, Federal Communications Commission (FCC), CE |
| EAN | 6935364050511 |
| Warranty | 3 years |
The TP-Link TL-WN781ND 150Mbps Wireless N PCI Express Adapter provides wireless connectivity for desktop computers. This internal network card connects to a motherboard via an available PCI Express (x1) slot. Operating on the 2.4 GHz frequency band, the device uses the Wi-Fi 4 standard to reach data transfer rates of up to 150 Mbit/s. These speeds are suitable for routine tasks such as web browsing and basic file sharing. Designed exclusively for wireless networking, the card does not support Bluetooth or wired Ethernet.
The adapter uses an integrated Atheros chipset. Measuring 120.8 mm by 78.5 mm, the card fits standard desktop chassis. A built-in Link/Activity LED on the rear bracket shows the active connection status. The card supports OFDM and 16-QAM modulation for data encoding and is compatible with Linux and various Windows versions, from XP through Windows 10.
Key Features:- Supports IEEE 802.11b and 802.11g standards for backward compatibility with older networks
- Detachable omni-directional antenna with an RP-SMA connector for flexible positioning or replacement
- 2 dBi antenna gain for stable signal reception
- Supports WPA-PSK and WPA2-PSK encryption for secure data transmission
- Infrastructure mode for connecting directly to routers and access points
Estimated delivery: Today
Today: 10:00 - 18:00
Estimated delivery: 14.08 - 17.08
Today: 09:00 - 17:00
Estimated delivery: 14.08 - 17.08
Today: 10:00 - 17:00
Estimated delivery: Today
Today: 10:00 - 18:00
Estimated delivery: 14.08 - 17.08
Today: 10:00 - 18:00
Estimated delivery time: Today
Estimated delivery time: 14.08 - 18.08
Estimated delivery time: 15.08 - 19.08
Estimated delivery time: 15.08 - 19.08
Estimated delivery time: 15.08 - 18.08
Estimated delivery time: 14.08 - 19.08
Estimated delivery time: 14.08 - 19.08
Estimated delivery time: 15.08 - 18.08


