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TP-Link TL-WN781ND (PCIe, 150Mbps)

Network 802.11n, Network, PCIe, TP-Link, WiFi, Wireless

TP-Link TL-WN781ND (PCIe, 150Mbps)
Linux compatibility: Only the Linux compatibility is rated on this page, not the general quality of the product. If you use this product with Linux, please rate it and share your experience in the comment area of this page (bottom) to support other Linux users.
9 votes, average: 4.6 out of 59 votes, average: 4.6 out of 59 votes, average: 4.6 out of 59 votes, average: 4.6 out of 59 votes, average: 4.6 out of 5
  ( 4.6 with 9 ratings)

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Price trend
TP-Link TL-WN781ND 
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Minimum: $ 8.92 
Maximum: $ 24.99  
Updated: 10/04/2016 02:46

Review of Linux Compatibility

The PCI-Express network card TP-Link TL-WN781ND exists in two different versions (V1 and V2), which both use the same Atheros AR9485 chipset and are both fully supported by Linux (e.g. Ubuntu 10.10, Feodora 15, openSUSE 11.4).

The version V1 has the PCI ID 168c:002b and can be distinguished by the labeling Rev:1.0 or REV:1.0sp1 printed on the card. The version V2 has the PCI ID 168c:0032 and is labeled with the text Rev:1.0sp2 or Rev:2.0.

Version V1 (168c:002b)

Version V1 is recognized by the kernel in the following way:

02:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
        Subsystem: Atheros Communications Inc. Device 30a1
        Kernel driver in use: ath9k

The card uses the kernel module ath9k which will be loaded automatically:

ath9k 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
ath9k 0000:01:00.0: setting latency timer to 64
ieee80211 phy0: Selected rate control algorithm 'ath9k_rate_control'
Registered led device: ath9k-phy0

In addition some other modules are necessary tu utilize the ath9k:

ath9k       11828 0
mac80211    29370 1 ath9k
ath9k_common 1351 1 ath9k
ath9k_hw    32307 2 ath9k,ath9k_common
ath          2373 2 ath9k,ath9k_hw
cfg80211    17528 3 ath9k,mac80211,ath

Version V2.2 (168c:3118)

The version V2.2 of the card bases on the Qualcomm Atheros AR9485 chipset:

02:00.0 Network controller [0280]: Qualcomm Atheros AR9485 Wireless Network Adapter [168c:0032] (rev 01)
	Subsystem: Qualcomm Atheros Device [168c:3118]
	Kernel driver in use: ath9k

This version of the TL-WN781ND is automatically recognized by the kernel and supported by the ath9k kernel module (e.g. Ubuntu 14.04, Debian 7.5):

ath: EEPROM regdomain: 0x21
ath: EEPROM indicates we should expect a direct regpair map
ath: Country alpha2 being used: AU
ath: Regpair used: 0x21
ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy0: Atheros AR9485 Rev:1 mem=0xf8880000, irq=16

Manufacturer specifications can be found at http://www.tp-link.com/en/products/details/?model=TL-WN781ND.


Identified Hardware Configurations (2 Results)

This hardware component was used by Linux users under the following system configurations. These results were collected by our LHG Scan Tool:
Distribution
Kernel
Rating
Scan Date
Arch Linux 4.6.4-1-ARCH The user provided the following rating for this hardware: 5 out of 5The user provided the following rating for this hardware: 5 out of 5The user provided the following rating for this hardware: 5 out of 5The user provided the following rating for this hardware: 5 out of 5The user provided the following rating for this hardware: 5 out of 5 31/07/2016
Fedora release 20 (Heisenbug) 3.17.4-200.fc20.x86_64 The user provided the following rating for this hardware: 5 out of 5The user provided the following rating for this hardware: 5 out of 5The user provided the following rating for this hardware: 5 out of 5The user provided the following rating for this hardware: 5 out of 5The user provided the following rating for this hardware: 5 out of 5 06/12/2014

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 Comments

6 Responses to “TP-Link TL-WN781ND (PCIe, 150Mbps)”

  • Vik says:

    Works perfectly out of the box on Debian 8 host.
    Additionally I installed an external desktop antenna instead of stock one, which made significant improvement in bit rate and signal quality.

  • Yogesh Marwaha says:

    Perfect. Installed card, booted into Arch Linux (updated upto August 30, 2014), selected Access Point… Password and Go! As simple as that. No signal/stability issues so far.
    EDIT: Its Version V2.2 (168c:3118). Driver being used is ath9k. I’m on KDE4 with Network Manager.

  • andrey says:

    Model TL-WN781ND Ver:2.2 carries ” Network controller: Qualcomm Atheros AR9485 Wireless Network Adapter (rev 01)” onboard.
    Pros: Ubuntu 14.04/Deb7.5 – works out of the box!
    Cons: poor signal strenght

    • LHG-Team says:

      Hello andrey,
      Could you please provide the PCI ID of this version of the TL-WN781ND, by posting its output of “lspci -nnk”?
      Also the corrsponding output of dmesg would be interesting to see. Thanks.

    • LHG-Team says:

      Hello andrey,
      Thank you for your email with the output of dmesg and lspci. I added the information to the description of the TL-WN781ND.

  • steve says:

    The v1 actually uses ar9285, not sure about v2, some people saying it’s ar9485 and others saying it’s a r9285

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