Abstract: A computer power supply mounting apparatus includes a fixing member (40) to mount a power supply (60) into a computer chassis (20). The power supply has a front panel (62), a side panel (64) and a back panel (66). A pair of hooks (642) is formed on the side panel. The fixing member is slidably attached to the front panel of the power supply. The fixing member has a body (42) with a pair of posts (422) extending therefrom. The computer chassis includes a rear plate (22) and a side plate (24) for respectively abutting against the back panel and the side panel of the power supply. At least one rack (224) is formed on the chassis for supporting the power supply. A pair of receiving slots (242) and a pair of receiving holes (244) are defined in the side plate for respectively retaining the hooks of the power supply and the posts of the fixing member.