The computer uses Complementary Metal-Oxide Semiconductor (CMOS) technology extensively to provide compact size, minimum weight, low power usage, and high reliability. This computer incorporates the following features and benefits: Processor The computer is equipped with an Intel® processor, which incorporates a math coprocessor and a 32 KB cache memory. 700 Mhz Mobile Pentium® III processor 700 Mhz Intel® SpeedStep™ technology 750 Mhz Mobile Pentium® III processor 750 Mhz Intel® SpeedStep™ technology 850 Mhz Mobile Pentium® III processor 850 Mhz Intel® SpeedStep™ technology Other processors may be offered in the future. Built-in Memory 64, 128 or 256 MB memory modules can be installed in the two memory slots for a maximum of 512 MB system memory. Level 2 cache A 256 KB level 2 cache maximises performance. Video RAM 16 MB of RAM is provided for video display. Battery pack The computer is powered by a rechargeable lithium-ion battery pack(s). A main battery and/or an optional Secondary battery installed in the SelectBay. RTC battery The internal RTC battery backs up the Real Time Clock (RTC) and calendar. AC adaptor The universal AC adaptor provides power to the system and recharges the batteries when they are low. It comes with a detachable power cord. Because it is universal, it can receive a range of AC voltage between 100 and 240 volts. Built-in Hard disk Hard disk drive is available in two sizes: drive 10 GB* 20 GB* Other hard disk drives may be offered in the future. *One GB means one billion bytes.