A media cassette comprises a housing defining a closeable pick window; an urging plate biased towards the pick window for urging a stack of media items towards the pick window; a detent located distal from the pick window for limiting movement of the urging plate when the pick window is closed; and a detent moving mechanism operable to move the detent when the pick window is opened. The media cassette allows the urging plate to exert less force on the stack of media items by expanding the space available for media items located within the cassette by activating the detent moving mechanism.