Ambit cable modem drivers are downloadable online from quite a few sources. You should first see which Ambit modem that you have so you make sure you get the correct driver. Once you locate the model number on the modem you can download the driver. You can check for your driver here http://drivers.softpedia.com/get/MODEM/OTHER-MODEM-DRIVERS/AMBIT-Broadband-Cable-Modem-Driver-21.shtml. You can
. also download it at http://list.driverguide.com/list/company2087/.