Disclosed are embodiments of a power adapting apparatus with an image forming apparatus and an electronic apparatus having the same. The power adapting apparatus includes a DC power generator to receive input AC power and generating DC power, a DC power output terminal to output the DC power, and an AC power output terminal to output the input AC power, wherein the power adapting apparatus is located outside an image forming apparatus receiving the DC power and the AC power respectively output from the DC power output terminal and the AC power output terminal.According to the disclosed power adapting apparatus, the power adapting apparatus, the fusing controller, the protection circuit, the AC-AC transformer, and other extensible circuits can be arranged outside the image forming apparatus, and thus allowing for a reduction in size of the image forming apparatus. Accordingly, it is possible to produce compact printers or multi-function peripherals for SOHO (Small Office Home Office) and personal users, which satisfy consumer's demands.