US Patent 6954357 Detachable notebook computer

A portable computer includes a housing, a power supply, a liquid crystal display panel, a keyboard, a pointing device control unit, and a cassette. The housing has a recess, and the cassette is detachably installed in the recess. The cassette includes a case, a motherboard, a central processing unit, a chipset, and a memory. The recess and the cassette are connected through a connection interface having a port for power supply, a display device connection interface, and a peripheral device connection interface, for transferring power and signals.