Abstract: An attached internet telephone device is disclosed herein, which is capable of adding an internet telephone function to a host having internet connection capacity but lacking an internet telephone function. The attached internet telephone device comprises a USB module, a memory module, a communication module, and a controller. The controller retrieves an internet telephone software program from the memory unit after a USB interface of the USB module is plugged into a USB interface of the host, and installs the software program to the host. After the installation is completed, under the control of the communication module, a user may perform internet telephone communication with the host that lacks the internet telephone function originally.

Abstract: A portable hard disk casing includes a hollow body with a front opening, a rear opening and two pairs of guiding tracks each formed on an inner face of the hollow body to be opposite to each other, two carriers for carrying thereon a storing unit, each carrier having two coupling ribs respectively formed on a side of the carrier to be opposite to one another to correspond to and to be received in the guiding tracks of the hollow body, a front cover to connect to the hollow body to cover the front opening of the hollow body and a rear cover to connect to the hollow body to cover the rear opening of the hollow body such that the storing unit is enclosed in the portable hard disk casing.

Abstract: A portable hard disk casing includes a hollow body with a front opening, a rear opening and two pairs of guiding tracks each formed on an inner face of the hollow body to be opposite to each other, two carriers for carrying thereon a storing unit, each carrier having two coupling ribs respectively formed on a side of the carrier to be opposite to one another to correspond to and to be received in the guiding tracks of the hollow body, a front cover to connect to the hollow body to cover the front opening of the hollow body and a rear cover to connect to the hollow body to cover the rear opening of the hollow body such that the storing unit is enclosed in the portable hard disk casing.