Abstract: A heterogeneous network apparatus, method, computer program, and computer readable medium can detect path status parameters of heterogeneous networks. The path status parameters are used to calculate path priorities. The path priorities are used to determine an assignment ratio. The assignment ratio is used to assign network paths to transmit a packet, whereby the problem that the heterogeneous network apparatus of the prior art cannot utilize different network interfaces effectively at the same time is solved.

Abstract: A portable computer includes a central processing unit, a monitor unit laying on and pivoted to the central processing unit, and a hard disk drive unit fitted in the storage chamber of the central processing unit. The storage chamber has a bottom wall and a side wall assembly which has two locking holes. The hard disk drive unit includes a housing, two insertion elements mounted movably in the housing, a rotary actuating unit mounted pivotally on the central processing unit, and a spring unit which biases the insertion elements to extend from the housing to engage within the locking holes of the storage chamber so as to retain the hard disk drive unit in the storage chamber. When the rotary actuating unit is turned upward, the insertion elements retract into the housing, thereby enabling the hard disk drive unit to be removed from the central processing unit.