Find a new Atlantic Broadband modem here. See the list of cable modems compatible with Atlantic Broadband below with our easy sort table. Check your account online or your bill if you are unsure of what service speed you subscribe to. Bear in mind any future service upgrades you may subscribe to so you can find a modem that is future proof. Note: Third-party cable modems with voice are not permitted at this time with Atlantic Broadband. See Atlantic Broadband modem list below.