4GB of available hard-disk space for installation additional free space required during installation (cannot install on a volume that uses a case-sensitive file system or on flash-based storage devices).Broadband Internet connection required for online services and Creative Suite Subscription Edition software*.QuickTime 7.6.2 required for multimedia features.1,024x768 display (1,280x800 recommended) with 16-bit or greater video card.3.5GB of available hard-disk space for installation additional free space required during installation (cannot install on flash-based storage devices).Microsoft® Windows® XP with Service Pack 2 (Service Pack 3 recommended) or Windows Vista® Home Premium, Business, Ultimate, or Enterprise with Service Pack 1 certified for 32-bit Windows XP and Windows Vista or Windows 7.Intel® Pentium® 4 or AMD Athlon® 64 processor.NOTE: Flash Professional CS5.5 is a 32-bit application which can be installed on computers with either 32-bit or 64-bit operating systems.
