- 137 -≥ Even if the system requirements mentioned in these operating instructions are fulfilled,some PCs cannot be used.≥ A CD-ROM drive is necessary to install the supplied software applications. (A compatibleBlu-ray disc/DVD writer drive and media are necessary for writing to a Blu-ray disc/DVD.)≥ Operation is not guaranteed in the following cases.j When 2 or more USB devices are connected to a PC, or when devices are connectedthrough USB hubs or by using extension cables.j Operation on an upgraded OS.j Operation on an OS other than the one pre-installed.≥ This software is not compatible with Microsoft Windows 3.1, Windows 95, Windows 98,Windows 98SE, Windows Me, Windows NT and Windows 2000.∫ Operating environment for HD Writer AE 4.1With a PCOperating environmentPC IBM PC/AT compatible PCOS Windows 7 (32 bit/64 bit) Starter/Home Basic/Home Premium/Professional/Ultimate (SP1)Windows Vista (32 bit) Home Basic/Home Premium/Business/Ultimate (SP 2)Windows XP (32 bit) (SP 3)CPU Intel Pentium 4 2.8 GHz or higher (including compatible CPU)≥ Intel Core 2 Duo 2.16 GHz or higher or AMD Athlon 64 X2 Dual-Core 5200+ or higher is recommended when using playbackfunction or MPEG2 output function.≥ Intel Core 2 Quad 2.6 GHz or higher is recommended when usingthe editing or Continuous Photo Playback function.≥ Intel Core i7 2.8 GHz or higher is recommended when playingback or using the editing function for AVCHD 3D or 1080/50p.RAM Windows 7: 1 GB or more (32 bit)/2 GB or more (64 bit)Windows Vista: 1 GB or moreWindows XP: 512 MB or more (1 GB or more recommended)