Hello Day School Lake According to the manufacturer's website, the following printers are compatible: HP LaserJet Pro 300 M351a colour printer (CE955A). HP LaserJet Pro 300 M375nw multifunction colour printer (CE903A) HP LaserJet Pro 400 M451dn colour printer (CE957A) HP LaserJet Pro 400 M451dw colour printer (CE958A) HP LaserJet Pro 400 M451nw colour printer (CE956A) HP LaserJet Pro 400 M475dn multifunction colour printer (CE863A) HP LaserJet Pro 400 M475dw Multifunction Colour Printer (CE864A) Greetings John

http://store.hp.com/SwitzerlandStore/Merch/Product.aspx?id=CE412A&opt=&sel=SUP important: the old printers and multifunction devices are listed at the bottom.