22English SpecificationsOperatingsystem • Windows ® Vista ™ Capable• Genuine Windows ® XP Professional (Service Pack 2)• Genuine Windows ® XP Home Edition (Service Pack 2)Windows ® Vista ™ Capable PCs come withWindows ® XP installed, and can beupgraded to Windows ® Vista ™ . For moreinformation on Windows ® Vista ™ and howto upgrade, go to: Microsoft.com/windowsvista.Platform For Aspire 5550• Intel ® Centrino ® Duo mobile technology, featuring:• Intel® Core™ Duo processor T2300/T2400/T2500/T2600 (2 MB L2 cache, 1.66/1.83/2/2.16 GHz, 667MHz FSB)• Mobile Intel ® 945GM/PM Express chipset• Intel® PRO/Wireless 3945ABG or 3945BGnetwork connection (dual-band tri-mode802.11a/b/g) Wi-Fi CERTIFIED™ solution,supporting Acer SignalUp™ wireless technologyFor Aspire 3670• Intel ® Celeron ® M processor 410/420/430 (1 MB L2cache, 1.46/1.60/1.73 GHz, 533 MHz FSB) or higher• Mobile Intel® 940GML Express chipsetSystem memory • Up to 2 GB of DDR2 533/667 MHz system memory,upgradeable to 2 GB (for Aspire 3670) or 4 GB (forAspire 5550) using two soDIMM modules (dual-channel support)