I have D5445 photosmart. Do I use 3X black or 2X black?

HP CN684WN (#564XL 2X) Black Compatible Hi-Yield Ink Cartridge
Photosmart D5445 can use either 2X or 3X yield black. You can confirm it by checking the width of your black ink slot. It has to be about 1 inch wide for 3X black to fit in.
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Answered by TonerPirate on Feb 27, 2016