The HP 712 12 ml introductory yellow ink cartridge (3ED61A) is a yellow ink supply for compatible HP DesignJet printing. Its yellow ink is provided in a 12 ml cartridge, identified in the listing as an introductory version of the HP 712 range.
The listing associates this exact part with the HP DesignJet Studio 36-in printer (5HB14A). It is intended for use as an ink cartridge in that printer, adding yellow ink to its printing supplies. The listing does not specify yield or package contents beyond the cartridge itself.