Amazon.com: TP-Link N300 Wireless Extender, Wi-Fi Router (TL-WR841N) - 2 x 5dBi High Power Antennas, Supports Access Point, WISP, Up to 300Mbps : Electronics
TP-LINK TL-WR841N 300Mbps Mini Wifi Router 2.4G Wireless Router Wifi Repeater with 2*5dBi High Gain Antennas English Firmware - AliExpress
GitHub - JulianOzelRose/TL-WR841N-v14: Hardware hacking of TL-WR841N router. Gained root shell access via the router's UART port. Extracted the file system via TFTP and extracted the firmware via SPI programmer.