The Canon 4640A001 RS-232 (Serial) Cable is intended for external control of the following projectors using a (serial) mouse:
LV-5100, LV-5110, LV-5200, LV-5210, LV-5220, LV-5300, LV-7105, LV-7210, LV-7215, LV-7220, LV-7225, LV-7230, LV-7240, LV-7245, LV-7300, LV-7320, LV-7325, LV-7345, LV-7350, LV-7355, LV-7500, LV-7510, LV-7525, LV-7545, LV-7555, LV-7565, LV-S1, LV-S2, LV-S3, LV-S4, LV-X1, LV-X2, LV-X4, and LV-X5.