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Edimax EW-7822UAC

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Edimax EW-7822 UAC V1.0
Availability: common

FCC approval date: 04 March 2013
UPC: 649659022959 (UPC DB, On eBay)
Country of manuf.: China

Amazon image

ASINs
B00BXAXO7C (Flag of the United States.svg, On Amazon, On CCC)
B00F97PU18 (Flag of the United States.svg, On Amazon, On CCC)
multiple revisions of this device, use caution

Interface: USB

USB 3.0
Connector: Male A
Form factor tags: dongle

ID: 7392:a822
Windows: USB\VID_7392&PID_A822

FCC ID: NDD9578221212

WI1 chip1: Realtek RTL8812AU

Probable Linux driver
Realtek's vendor driver (8812au)
available on Edimax's site (from the 7822UAC's prod. pg)
md5: fda86443df638abd9f50a9997090d58e
slightly modified version (additional USB IDs added)
md5: 2e345f43f5fa50ca1137655b5a5bc9ab
also, abperiasamy's 8812au repo on GitHub which is patched for newer kernels
USB ID not yet observed in any mainline kernel / this list
(see also passys)

Windows driver
see Realtek's website

Antenna connector: U.FL

abgn+ac, 2x2:2

Flags: flip-up antenna

OUI: none specified

 FCC ID
Netgear A6200 v2NDD9578221212
Rosewill RNX-AC1200UBEW6R-AC1200UBE
NDD9578221212
Samsung SEA-W01ACNNDD9578221212
ZyXEL AC240NDD9578221212
For a list of all currently documented Realtek chipsets with specifications, see Realtek.



AC1200 Wireless Dual-Band USB Adapter

Product page  • Datasheet

"1244-01000871-50Z" appears to be silkscreened on the board in the FCC photos.

The device is using two Skyworks (SiGe) SE5022T / 5022T 5GHz Power Amplifiers
and two Skyworks SKY85601 (SKY85601-11?) SPDT Switch w/ LNA modules.
The flip-up antenna (LYNWAVE ALA110-221020) is connected via an internal U.FL / IPEX connector.

Based on Edimax's provided drivers, the USB ID of the device is presumed to be 7392:a822 (and it is...).

The drivers also indicate a single-stream RTL8811AU based device
(USB ID: 7392:a811, AC600, EW-7811UAC?) may be released later by Edimax.

Warning: each time the device scans it seems to cause a 3second delay in
packets for several seconds (Linux 3.13 using patched 1.0.1.6 drivers).
As network manager does this by default every 2mins this is can be very problematic.

Review of Linux Compatibility[edit]

Edimax EW-7822UAC is a USB WiFi stick, which supports wireless connections 802.11ac.

The adapter bases on the Realtek RTL8812AU chipset and has the USB ID 7392:a822:
Bus 003 Device 002: ID 7392:a822 Edimax Technology Co., Ltd

Until now no driver for the EW-7822UAC is included in the standard Linux kernel.

However, Edimax provides a Linux driver for this adapter,
which has to be compiled from source per hand.

Alternatively, on can use a Open-Source Linux driver from GitHub

by downloading the ZIP file which is available on the linked page.

The downloaded file can be compiled by:

cd Downloads/rtl8812AU_8821AU_linux-master
make
sudo make install
sudo modprobe 8812au

The compiled kernel module 8812au.ko will be used automatically for the stick after reboot.

As of March 2017, Edimax has provided a detailed tutorial for compiling the Open Source driver on higher kernel versions (e.g. above 4.1)

Images[edit]