Abstract: An interface card positioning device including a positioning plate screwably fixed on a computer housing. The positioning plate cooperates with an adjusting screw and a sleeve fitted on the adjusting screw to hold the interface card firmly in position. Thus, cards such as VGA cards, network cards, IDE cards, sound cards, and IO cards may be firmly positioned after installation, and possible loosening or poor electrical contact due to transportation or prolonged use may be avoided.

Abstract: A positioning device for computer read-write devices including a slightly bulging block with a central threaded hole at one of the side walls of a housing having a space for receiving a read-write device. Two ends of the slightly bulging block corresponding to positioning threaded holes at the sides of the read-write device are provided with respective through holes. A fastening plate with two bent ends is further provided. When the read-write device is slid along slide rails of the space into the space and positioned therein, two fastening ends of the fastening plate may pass through the through holes into the positioning threaded holes of the read-write device and be positioned. A screw is then passed through a central hole of the fastening plate into the central threaded hole of the slightly bulging block so that a disk drive may move to lie against the other side and hence position the read-write device. The invention provides easy, quick, and simple installation and removal of the read-write device.