A portage computer case whether in a closed state or open state permits a user to exercise control and monitor certain operating features. The user may toggle a control switch to place the computer system in a secondary operational mode, determine when a computer system is in a secondary operational...http://www.google.com.au/patents/US6502003?utm_source=gb-gplus-sharePatent US6502003 - Method and system for controlling a CD-ROM drive in an operating system-independent reduced power mode
