OpenWRT - Install OpenWRT on the TP- Link TL-MR6400 4G LTE WiFi Router - YouTube
TP-Link TL-MR6400 300Mbps 4G Mobile Single Band Wi-Fi Router, 4 Ports, High Reception Sensitivity, No Configuration Required, with Micro SIM Card Slot, App Management (Black) - JioMart
TL-MR6400 | 300 Mbps Wireless N 4G LTE Router | TP-Link Hong Kong