HP Spindle Kit C2390A is compatible in the following HP Models:

HP DesignJet Spindles

HP 42-INCH SPINDLE - C2390A

HP DesignJet Copier series

HP DESIGNJET CC800PS COPIER - Q1262A

HP DesignJet 815mfp series

HP DESIGNJET 815MFP - Q1279A
HP DESIGNJET 815MFP REMARKETED - Q1279AR

HP DesignJet 800 Printer series

HP DESIGNJET 800 PRINTER (42 IN) - C7780B
HP DESIGNJET 800 REMARKETED PRINTER (42 IN) - C7780BR
HP DESIGNJET 800PS PRINTER (42 IN) - C7780C
HP DESIGNJET 800PS REMARKETED PRINTER (42 IN) - C7780CR

HP DesignJet 500 Printer series

HP DESIGNJET 500 42-IN ROLL PRINTER - C7770B
HP DESIGNJET 500 REMARKETED PRINTER - C7770BR
HP DESIGNJET 500PS 42-IN ROLL PRINTER - C7770C
HP DESIGNJET 500PS 42-IN ROLL REMARKETED PRINTER - C7770CR