armor alternative cyan toner cartridge k15538 is compatible with the original hp ce401a cartridgee and is designed for hp clj 500/m551 laser printers. this alternative allows up to 6,000 pages to be printed at 5% coverage (according to iso/iec 19752 yield test standard). coverage (%)/number of pages: 5/6000 toner color: blue genuine accessories: no. for printer manufacturers: hp if you are unsure about compatibility, please contact owa armor toners - responsible solutionstoners owa armor - unique combination of economic and ecological solutions ? high-quality owa armor toner cartridgees for almost all printers on the market. ? owa armor toners are a great solution to save up to 80% on your printing costs compared to branded toners, while protecting the environment. ? armor guarantees print quality. ? none of owa armor toners infringes patent law. ? owa armor toners support your csr (corporate & social responsibility) initiatives. ? when using owa toners, gear-up.me can issue you a certificate of responsible printing for your csr reports. see how owa worksother benefits of using owa armor toners: ? immediate reduction of your printing costs & ability to order your toners 24/7 online via gear-up.me ? free technical support at or ? corporate printing solutions for smes and large corporations alike. ? free marketing support for partners promoting ecological printing solutions. ? the assurance that no owa armor toners break patents and are wholesome. ? french quality guaranteed by international certificates. ? owa armor toner lifetime warranty. ? new printer warranty.