printer cable help

is there an adapter that can make this (HP deskjet 656c power module)
image---> http://img411.imageshack.us/img411/6254/656cmodule.jpg
cable port fit in this (HP deskjet 3920 power port)
image---> http://img594.imageshack.us/img594/3221/3920powerport.jpg

if there is!! are this two compatible..i mean 656c printer power module can work in 3920 printer?..and HP site says that 656c power module are the same with the power module intended for 3920 in term of output and input..so are they compatible?