A liquid cartridge (30, 230, 330, 430, 530, 630) in combination with a printer having a cartridge-attachment section (110, 210, 310, 410) to which the liquid cartridge (30, 230, 330, 430, 530, 630) 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 (110, 210, 310, 410) including a protruding portion extending in the insertion direction and having a width in a widthwise direction (55, 56) orthogonal to the insertion direction and the gravitational direction, the liquid cartridge (30, 230, 330, 430, 530, 630) in the upright posture comprising: a casing (31, 231, 431) comprising: a liquid chamber (32, 33, 432) storing liquid therein; and a liquid passage (35, 435) extending from the liquid chamber (32, 33, 432) in the insertion direction; a movable member (130, 230M, 330M, 430M, 530M, 630M) movably supported by the casing (31, 231, 431), the movable member (130, 230M, 330M, 430M, 530M, 630M) being movable relative to the casing (31, 231, 431); and a circuit board (64, 65); characterized in that the circuit board (64, 65) is provided at the movable member (130, 230M, 330M, 430M, 530M, 630M) and facing upward, wherein the movable member (130, 230M, 330M, 430M, 530M, 630M) includes a receiving portion (132, 432M, 532, 632) adapted to receive the protruding portion of the cartridge-attachment section (110, 210, 310, 410) in the insertion direction and in the widthwise direction (55, 56) during insertion of the liquid cartridge (30, 230, 330, 430, 530, 630) into the cartridge-attachment section (110, 210, 310, 410) and in a state where the liquid cartridge (30, 230, 330, 430, 530, 630) is accommodated in the cartridge-attachment section (110, 210, 310, 410); wherein the receiving portion (132, 432M, 532, 632) provides a receiving space that is open in the insertion direction and in the widthwise direction (55, 56); and wherein the receiving portion (132, 432M, 532, 632) has a contact surface (133, 533, 633) defining the receiving space, the contact surface (133, 533, 633) facing downward and extending in the insertion direction and the widthwise direction (55, 56), the contact surface (133, 533, 633) being configured to contact the protruding portion of the cartridge-attachment section (110, 210, 310, 410) during the insertion of the liquid cartridge (30, 230, 330, 430, 530, 630) into the cartridge-attachment section (110, 210, 310, 410) and in the state where the liquid cartridge (30, 230, 330, 430, 530, 630) is accommodated in the cartridge-attachment section (110, 210, 310, 410). a casing (31, 231, 431) comprising: a liquid chamber (32, 33, 432) storing liquid therein; and a liquid passage (35, 435) extending from the liquid chamber (32, 33, 432) in the insertion direction; a liquid chamber (32, 33, 432) storing liquid therein; and a liquid passage (35, 435) extending from the liquid chamber (32, 33, 432) in the insertion direction; a movable member (130, 230M, 330M, 430M, 530M, 630M) movably supported by the casing (31, 231, 431), the movable member (130, 230M, 330M, 430M, 530M, 630M) being movable relative to the casing (31, 231, 431); and a circuit board (64, 65); characterized in that the circuit board (64, 65) is provided at the movable member (130, 230M, 330M, 430M, 530M, 630M) and facing upward, wherein the movable member (130, 230M, 330M, 430M, 530M, 630M) includes a receiving portion (132, 432M, 532, 632) adapted to receive the protruding portion of the cartridge-attachment section (110, 210, 310, 410) in the insertion direction and in the widthwise direction (55, 56) during insertion of the liquid cartridge (30, 230, 330, 430, 530, 630) into the cartridge-attachment section (110, 210, 310, 410) and in a state where the liquid cartridge (30, 230, 330, 430, 530, 630) is accommodated in the cartridge-attachment section (110, 210, 310, 410); wherein the receiving portion (132, 432M, 532, 632) provides a receiving space that is open in the insertion direction and in the widthwise direction (55, 56); and wherein the receiving portion (132, 432M, 532, 632) has a contact surface (133, 533, 633) defining the receiving space, the contact surface (133, 533, 633) facing downward and extending in the insertion direction and the widthwise direction (55, 56), the contact surface (133, 533, 633) being configured to contact the protruding portion of the cartridge-attachment section (110, 210, 310, 410) during the insertion of the liquid cartridge (30, 230, 330, 430, 530, 630) into the cartridge-attachment section (110, 210, 310, 410) and in the state where the liquid cartridge (30, 230, 330, 430, 530, 630) is accommodated in the cartridge-attachment section (110, 210, 310, 410).