A liquid cartridge in combination with a printer having a cartridge-attachment section to which the liquid cartridge is configured to be inserted in an insertion direction crossing a gravitational direction and accommodated in the cartridge-attachment section in an upright posture, the cartridge-attachment section including a protruding portion extending in the insertion direction and having a width in a widthwise direction orthogonal to the insertion direction and the gravitational direction , the liquid cartridge in the upright posture comprising: a casing comprising: a liquid chamber storing liquid therein; and a liquid passage extending from the liquid chamber in the insertion direction ; a movable member movably supported by the casing , the movable member being movable relative to the casing ; and a circuit board ; characterized in that the circuit board is provided at the movable member and facing upward, wherein the movable member includes a receiving portion adapted to receive the protruding portion of the cartridge-attachment section in the insertion direction and in the widthwise direction during insertion of the liquid cartridge into the cartridge-attachment section and in a state where the liquid cartridge is accommodated in the cartridge-attachment section ; wherein the receiving portion provides a receiving space that is open in the insertion direction and in the widthwise direction ; and wherein the receiving portion has a contact surface defining the receiving space, the contact surface facing downward and extending in the insertion direction and the widthwise direction , the contact surface being configured to contact the protruding portion of the cartridge-attachment section during the insertion of the liquid cartridge into the cartridge-attachment section and in the state where the liquid cartridge is accommodated in the cartridge-attachment section . a casing comprising: a liquid chamber storing liquid therein; and a liquid passage extending from the liquid chamber in the insertion direction ; a liquid chamber storing liquid therein; and a liquid passage extending from the liquid chamber in the insertion direction ; a movable member movably supported by the casing , the movable member being movable relative to the casing ; and a circuit board ; characterized in that the circuit board is provided at the movable member and facing upward, wherein the movable member includes a receiving portion adapted to receive the protruding portion of the cartridge-attachment section in the insertion direction and in the widthwise direction during insertion of the liquid cartridge into the cartridge-attachment section and in a state where the liquid cartridge is accommodated in the cartridge-attachment section ; wherein the receiving portion provides a receiving space that is open in the insertion direction and in the widthwise direction ; and wherein the receiving portion has a contact surface defining the receiving space, the contact surface facing downward and extending in the insertion direction and the widthwise direction , the contact surface being configured to contact the protruding portion of the cartridge-attachment section during the insertion of the liquid cartridge into the cartridge-attachment section and in the state where the liquid cartridge is accommodated in the cartridge-attachment section . <EOS>