Package contents: 1 x User Guide, 2 x hp 148a toner cartridge (Total 2 Pack) Low Ink Tips: The printer working with our toner could not show the remaining toner level ,but which would not affect the printing and page yield. Page Yield: 2,900 pages per 148a toner cartridge at 5% coverage on A4 paper Printer Compatibility: for hp laserjet 148a toner cartridge to use with Pro MFP 4101fdw 4101fdn 4001fdw, Pro 4001dn 4001n 4001dw printer. NOT Compatible for Suffix with Letter "e" such as: Pro MFP 4101fdwe/ 4101dwe/ 4101fdne, Pro 4001dwe/ 4001dne/ 4001ne Please note: E-Z Ink w1480a 148a toner cartridge don't activate and update the compatible for + Program. Program activation will cause the compatible toner cartridge to be unrecognized.