A:
below is a complete list of all compatible HP Ink Cartridges for the HP Photosmart Premium All-in-One Printer - C309g:
HP 564 Black Ink Cartridge (CB316WN)
HP 564 Photo Black Ink Cartridge (CB317WN)
HP 564 Cyan Ink Cartridge (CB318WN)
HP 564 Magenta Ink Cartridge (CB319WN)
HP 564 Yellow Ink Cartridge (CB320WN)
HP 564 Combo-pack Cyan/Magenta/Yellow Ink Cartridges (CD994FN)
HP 564 Series Photosmart Photo Value Pack-85 sht/4 x 6 in borderless (CG925AN)
HP 564 Series Photo Value Pack 10 sht/4 x 6 in and 10 sht/5 x 7 in (CR702AN)
HP 564XL Black Ink Cartridge (CN684WN)
HP 564XL Photo Black Ink Cartridge (CB322WN)
HP 564XL Cyan Ink Cartridge (CB323WN)
HP 564XL Magenta Ink Cartridge (CB324WN)
HP 564XL Yellow Ink Cartridge (CB325WN)
HP 564XL 2-pack Black Ink Cartridges (CH605BN)
HP 564XL 3-pack Black Ink Cartridges (CR305BN)
HP 564XL Combo-pack Cyan/Magenta/Yellow/Photo Ink Cartridges (CH603BN)
HP 564XL Combo-pack Cyan/Magenta/Yellow Ink Cartridges (CN648BN)