aligned thermal contact with conductive face 410 fig5 is a diagram of apparatus 450 of fig4 operationally coupled at connection interface 500 with personal computer 400 of fig4 in accordance with a preferred embodiment of the present invention apparatus 450 is removable from the computer 400 at the connection interface 500 by utilizing a release mechanism not shown fig6 is a method for optimally controlling power to an apparatus operationally coupled with a processor of a personal computer in accordance with a preferred embodiment of the present invention it will be recognized by those skilled in the art that the sequence of operations described herein may be performed under control or by a stored program which may reside in on processor or resident memory software program or hardware configured to perform the same in a preferred embodiment the method is accomplished by the processor performing one or more appropriate software routines in step 600 the processor of the coupled personal computer determines the power utilization level of a connected apparatus and the desired operational speed of the processor the power utilization level p level may be received from the apparatus in a message or it may be calculated by the processor using a protocol or it may be read from storage or some other means from the p level and known characteristics of the computer 39 s power management system pms and the.