Recording material supply system, circuit board, structure, and ink cartridge for recording material consumption device

An ink cartridge (100) installable in a printer (1000) having a plurality of electrical contact members (410-470), comprising: an ink container (100B) for containing ink, the ink container (100B) having ) an ink supply port (110); a memory device (203); and a plurality of first terminals (220-240,260,270) for connection with the memory device (203), and two second terminals (210, 250) for detecting whether or not the ink cartridge (100) is installed in the printer ( 1000), in which: the plurality of first terminals (220-240,260,270) includes a power supply terminal (220) for receiving a power supply potential (VDD) that differs from a ground potential (VSS) of the printer (1000), the plurality of first terminals (220-240, 260, 270) and the two second terminals (210, 250) each include a contact portion (210c-270c) that, when the ink cartridge 100 is in an installed state that the ink cartridge 100 is installed in the printer 1000, it comes into contact with a corresponding one of the electrical contact members 410-470 of the printer (1000), the contact parts of the plurality of first terminals (220-240, 260, 270) and the contact parts of the two second terminals (210, 250) are arranged in a plurality of lines, the two contact parts (210c, 250c) of the two second terminals (210, 250) are located in a first line (L1) of the plurality of lines, the contact part (220c) of the power supply terminal (220) is located between the two contact parts ( 210c, 250c) of the two second terminals (210, 250) in the first line (L1), and the ink supply port (110) includes an opening (110op), characterized in that the first line (L1) is the closest of the plurality of lines to the opening (110op).