Customer FAQs Discover answers to the most frequently asked questions from ADT customers with the click of a button. 1. What kind of computer is required for ADT Pulse? You may use a PC running Microsoft® Windows® XP SP3, Vista (32-bit) or Windows 7 (32-/64-bit). Mac® computer users may also use the system with OS 10.5 (Leopard®) and later. Acceptable browsers include Internet Explorer® 7, 8 (32-/64-bit versions) and 9 (32-/64-bit versions); Mozilla Firefox (versions 5 and 6) and Apple® Safari® (versions 3.2.3 and 4.0); as well as later versions of each browser. Other operating systems and browsers may work but with reduced performance or with graphics and layouts that do not appear correctly.