Genuine OEM HP PhotoSmart Pro B8550 Series Ink and Supplies
Black and photo black are separate choices among the HP 564 inks listed for the PhotoSmart Pro B8550 Series. The mixed black-and-color pack names black, cyan, magenta and yellow, so photo black needs its own selection.
Toner Buzz carries genuine HP 564 and high-yield 564XL ink listed for this series, with individual cartridges and multipacks. The mixed pack pairs high-yield black with standard-yield colors; it is not an all-XL set.