Twinhead recommends Windows Vista™ Business. DURABOOK S15S Series -Intel® Core™2 Duo processor (4MB L2 Cache, 800/667MHz FSB) -Genuine Windows® Vista™ Business - Intel® Pro/Wireless 3945ABG (802.11a/b/g) or Intel—û Mini Express Wireless LAN 802.11N (optional) - Clear, sharp 15.4-inch WXGA TFT LCD screen (1280 x 800) - Integrated 4 in 1 media card reader & one Express Card Type 54/34 - Optional 3G Antenna and Bluetooth function - Optional Intel® Turbo Memory - 1.3 Mega-pixel Webcam - Passed Simulated Drop/Shock/Spill test in accordance to Military Standard 810F

DURABOOK S13Y Series -Intel® Core™ 2 Duo processor (FSB 667MHz) 2~4MB L2 Cache -Genuine Windows Vista™Business. -Magnesium alloy case-20 times stronger than ABS plastic, offering higher survival rate after drops and bumps -Anti-shock mounting design protects LCD screen and hard drive from damage and data loss. -Spill resistant keyboard, touchpad and buttons. -Exclusive optical disk tray lock prevent unintentional tray eject from drop and vibration. -Double protection smart battery circuitry prevents damage caused by current or voltage surges and overheating .

DURABOOK S14Y Series -Intel® Core™ 2 Duo processor (FSB 667MHz) 2~4MB L2 Cache -Genuine Windows Vista™Business. -Magnesium alloy case-20 times stronger than ABS plastic, offering higher survival rate after drops and bumps -Anti-shock mounting design protects LCD screen and hard drive from damage and data loss. -Spill resistant keyboard, touchpad and buttons. -Exclusive optical disk tray lock prevent unintentional tray eject from drop and vibration. -Double protection smart battery circuitry prevents damage caused by current or voltage surges and overheating . DURABOOK S14K Series -AMD Turion™ 64 MT28 and higher (25W) 512KB~1MB L2 Cache -Genuine Windows XP® Professional -Magnesium alloy case-20 times stronger than ABS plastic, offering higher survival rate after drops and bumps -Anti-shock mounting design protects LCD screen and hard drive from damage and data loss. -Spill resistant keyboard, touchpad and buttons. -Exclusive optical disk tray lock prevent unintentional tray eject from drop and vibration. -Double protection smart battery circuitry prevents damage caused by current or voltage surges and overheating .