HP Foreign Interface Harness

The HP Foreign Interface Harness (B5L31A) is a genuine HP accessory designed to enable external third-party devices (such as card readers or coin/credit payment systems) to interface with supported HP MFP printers. It includes the harness module and an end-cap security feature for installation. The physical dimensions of the module are 57.15 31.75 20.32 mm (approx) and it weighs about 0.05 kg. Compatible Printers: - HP LaserJet Enterprise MFP M527dn (F2A76A) - HP LaserJet Enterprise MFP M527f (F2A77A) - HP LaserJet Enterprise Flow MFP M527c (F2A81A) - HP LaserJet Enterprise Flow MFP M527z (F2A78A) - HP LaserJet Managed MFP M527dnm (F2A79A) - HP LaserJet Managed Flow MFP M527cm (F2A80A) - HP Color LaserJet Enterprise MFP M577dn (B5L46A) - HP Color LaserJet Enterprise MFP M577f (B5L47A) - HP Color LaserJet Enterprise Flow MFP M577c (B5L54A) - HP Color LaserJet Enterprise Flow MFP M577z (B5L48A) - HP Color LaserJet Managed MFP M577dnm (B5L49A) - HP Color LaserJet Managed Flow MFP M577cm (B5L50A)  Always consult your printer's documentation or HP support for exact firmware/version compatibility.