HP 148A and 148X are the same black toner for the same LaserJet Pro 4001 and MFP 4101 printers. The difference is yield.
148A (W1480A) is 2,900 pages. 148X (W1480X) is 9,500. If you print often, get the compatible HP 148X.
Printers on both: LaserJet Pro 4001n / 4001dn / 4001dw and MFP 4101dw / 4101fdn / 4101fdw, plus the e models. If the model ends in e, check HP+ first. HP+ locks the printer to HP cartridges.
We sell one black cartridge of each, chip installed. No 4-pack on this series.
Need the standard yield? Compatible HP 148A (W1480A).