TP-LINK Archer T4U

Overview

 * • 866Mbps - 2-stream 802.11ac device (433Mbps per stream),
 * • 300Mbps - 2-stream 2.4GHz channel = 1200 Mbps class

"2052500409" and the TP-LINK logo is silkscreened on the board in the FCC photos.

The USB ID for this device is per the driver set for the Amped Wireless ACA1.
 * The device description matches up with TP-LINK's tag line for this device.

Links of Interest

 * TP-LINK Archer T4U Teardown on MakerForce (internal images)
 * WIP Linux Driver: rtl8821au • rtl8821au • rtl8812au • rtl8812au_rtl8821au

Review of Linux Compatibility
TP-Link Archer T4U is a USB WiFi adapter for WiFi connections to 802.11ac standard.
 * The stick supports USB 3.0 and has the USB ID: 2357:0101

BUS 002 Device 023: ID 2357:0101 The stick bases on the Realtek RTL8812AU chipset, which currently
 * is not automatically recognized by the Linux kernel.

Pictures
Retail Images 

Open Source Driver
There is also an open source driver under development. This driver can be downloaded from GitHub: git clone https://github.com/abperiasamy/rtl8812AU_8821AU_linux.git cd rtl8812AU_8821AU_linux/ As of Oct 16, 2016 this driver contains the USB ID of the Archer T4U.

The driver can be compiled and installed with: make sudo make install If the TP-Link Archer T4U is plugged in, the kernel module rtl8812au should be loaded automatically: usb 1-1: new high-speed USB device number 2 using ehci-pci usb 1-1: New USB device found, idVendor=2357, idProduct=0101 usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-1: Product: 802.11n NIC usb 1-1: Manufacturer: Realtek usb 1-1: SerialNumber: 123456 cfg80211: Calling CRDA to update world regulatory domain 8812au: module verification failed: signature and/or required key missing - tainting kernel cfg80211: World regulatory domain updated: cfg80211:  (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) cfg80211:  (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) cfg80211:  (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) cfg80211:  (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) cfg80211:  (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) cfg80211:  (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) usbcore: registered new interface driver rtl8812au