User’s Manual 2-13The Grand TourAC adaptorThe AC adaptor converts AC power to DC power and reduces the voltagesupplied to the computer. It can automatically adjust to any voltage from100 to 240 volts and to a frequency of either 50 or 60 hertz, enabling you touse the computer in almost any country/region.To recharge the battery, simply connect the AC adaptor to a power source andthe computer. Refer to Chapter 6, Power and Power-Up Modes, for details.The AC adaptorThe read speed is slower at the centre of a disc and faster at the outeredge.DVD read 8 speed (maximum)DVD-R write 8 speed (maximum)DVD-RW write 6 speed (maximum)DVD+R write 8 speed (maximum)DVD+RW write 8 speed (maximum)DVD-R(DL) write 6 speed (maximum)DVD+R(DL) write 6 speed (maximum)DVD-RAM write 5 speed (maximum)CD read 24 speed (maximum)CD-R write 24 speed (maximum)CD-RW write 24 speed (maximum, Ultra-speed media)