When you refill a cartridge for the HP 3600/3800/CP3505 printer you must replace the chip. This chip is already included with our refill kits for HP 3600/3800/CP3505.
When you refill a cartridge for the HP 3600/3800/CP3505 printer you must replace the chip. This chip is already included with our refill kits for HP 3600/3800/CP3505.