HP inkjet C4400 series printer cartridges (Grange CH48)

I bought a brand new HP350 black cartridge for my HP pC4480 printer thinking the cartridge had run dry but it was the printer. I decided to buy a new printer (which takes different cartridges) which means I have a brand new unused black cartridge and two part used printer cartridges (HP 350 & a colour cartridge HP351) that I can't use.