A mounting apparatus for a PCI card includes an enclosure, a mounting bracket configured to secure a first end of the PCI card, a securing bracket mounted on the bottom panel, and a securing member. The securing bracket includes a bracket body and an engaging plate extending from the bracket body. The securing member includes a pressing element pivotably mounted to the securing bracket and a securing element pivotably mounted on the pressing element. The securing element is configured to engage the engaging plate to enable the pressing element to press the second end to locate the second end between the bracket body and the pressing element.