The is a budget AC1200 router. Firmware updates for this model are sporadic but important for security and stability. TP-Link no longer provides feature updates; only critical security patches and bug fixes.
With recent firmware (post-2022), yes. The v4 can act as a OneMesh router, allowing it to seamlessly pair with TP-Link RE series extenders (like RE300 or RE605X) without creating separate SSIDs. tplink archer c5 v4 firmware update