I am leaving the rating at 10 though because I have used Monoprice for years and they are awesome. Every problem I have ever ran into, they have been quick to fix it out of their own pockets. I think the printer is expecting to see some special Canon chip or something. It says, "The type of print head is incorrect. Install the correct print head."
PROS: It is inexpensive.
CONS: My MP600 printer doesn't recognize the cartridge. It recognizes the CLI8M but not this black one.