A: No. It’s a 2.4 GHz-only router. For dual-band, consider the Archer C series.
A: TP-Link sometimes removes older USB modem drivers. Install OpenWrt for broader modem support (RNDIS, QMI, NCM). tplink mr3420 v5 firmware
, which automatically checks for and installs new releases. Alternatively, a local upgrade can be performed by downloading a file from the TP-Link Support Center structure your search around these topics:
If you are looking for a "paper" to read, structure your search around these topics: tplink mr3420 v5 firmware