Abstract: A memory stick convert device includes an upper housing and lower housing and a convert interface. An assembly of the upper housing and the lower housing has the same type of connector as the Memory Stick(Pro) Duo does at an end. The assembly includes a cavity to accommodate a Micro-SD stick. The convert interface is sandwiched between the upper housing and the lower housing to convert signal formats between the Memory Stick (Pro) Duo and the Micro-SD.