Not directly. No such connections on the AC750 Archer C2 router.
Should not matter as long as the ISP supplied device (modem or modem/router) provides an WAN ethernet connection to the WAN port of the stated Archer.
Input to the ISP device could be coax cable or ADSL.
Or if there is some other "in-house" source with an ethernet port then an ethernet cable to the TP-Link AC750 Archer will work.