HP Waste Toner Unit B5L37A. Original or Compatible: Original. Page Yield (Approx.): 54000. Included in Delivery: 1 x Toner Collection Unit. Compatibility: HP Color Laserjet Enterprise Flow M 577 C, Color Laserjet Enterprise M 550, Color Laserjet Enterprise M 552 DN, Color Laserjet Enterprise M 552, Color Laserjet Enterprise M 553 DN, Color Laserjet Enterprise M 553 N, Color Laserjet Enterprise M 553 X, Color Laserjet Enterprise M 553, Color Laserjet Enterprise M 577 C, Color Laserjet Enterprise M 577 DN, Color Laserjet Enterprise M 577 F MFP, Color Laserjet Enterprise M 577 F, Color Laserjet Enterprise M 577, Color Laserjet Managed Flow MFP M 577 CM, Color Laserjet Managed M 553 DNM, Color Laserjet Managed M 553 XM, Color Laserjet Managed M 553, Color Laserjet Managed MFP M 577 DNM.