Ampuproducts Compatible Toner Cartridge Replacement For SHARP 1) MXC40NTB/1) MXC40NTC/1) MXC40NTM/1) MXC40NTY (COMPATIBLE) 4 PACKDescription Save on our compatible replacement for the Sharp MX C40NTB black laser toner cartridges. Don't bother with expensive OEM Sharp MX C40NTB laser toner and take advantage of our compatible replacement for the Sharp MX C40NTB laser toner which is Guaranteed to work with your Sharp MX C311 or MX C401 laser printer. Built to meet or exceed OEM (Original Equipment Manufacturer) standards, our compatible MX C40NTB toner offers exceptional yields