HP Paper (Photo) C6813A is compatible in the following HP Models:

HP Deskjet 900 Printer series

HP DESKJET 960CSE PRINTER - C8932B
HP DESKJET 960CXI PRINTER - C8932A

HP Deskjet 6600 Printer series

HP DESKJET 6620 COLOR INKJET PRINTER - C9034A
HP DESKJET 6620 COLOR INKJET PRINTER - C9034B
HP DESKJET 6620XI COLOR INKJET PRINTER - C9056A
HP DESKJET 6623 COLOR INKJET PRINTER - C9034C
HP DESKJET 6628 COLOR INKJET PRINTER - C9034D

HP DesignJet T770 Printer series

HP DESIGNJET T770 24-IN PRINTER - CQ305A
HP DESIGNJET T770 24-IN PRINTER WITH HARD DISK - CQ306A
HP DESIGNJET T770 44-IN PRINTER - CH539A
HP DESIGNJET T770 44-IN PRINTER WITH HARD DISK - CN375A

HP DesignJet T620 Printer series

HP DESIGNJET T620 24-IN PRINTER - CK835A

HP DesignJet T610 Printer series

HP DESIGNJET T610 24-IN PRINTER - Q6711A
HP DESIGNJET T610 44-IN PRINTER - Q6712A

HP DesignJet T1200 Printer series

HP DESIGNJET T1200 44-IN POSTSCRIPT VERSION PRINTER - CK834A
HP DESIGNJET T1200 44-IN PRINTER - CH538A

HP DesignJet T1200 HD Multifunction Printer series

HP DESIGNJET T1200 HD MULTIFUNCTION PRINTER - CQ653A

HP DesignJet T1120 Printer series

HP DESIGNJET T1120 24-IN PRINTER - CK837A
HP DESIGNJET T1120 44-IN PRINTER - CK839A
HP DESIGNJET T1120PS 24-IN PRINTER - CK838A
HP DESIGNJET T1120PS 44-IN PRINTER - CK840A

HP DesignJet T1120 HD Multifunction Printer series

HP DESIGNJET T1120 HD MULTIFUNCTION PRINTER - CK841A

HP DesignJet T1100 Printer series

HP DESIGNJET T1100 24-IN PRINTER - Q6683A
HP DESIGNJET T1100PS 24-IN PRINTER - Q6684A
HP DESIGNJET T1100PS 44-IN PRINTER - Q6688A

HP DesignJet Copier series

HP DESIGNJET CC800PS COPIER - Q1262A

HP DesignJet 820 MFP series

HP DESIGNJET 820 MFP - Q6685A

HP DesignJet 815mfp series

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

HP DesignJet 4020 Printer series

HP DESIGNJET 4020 42-IN PRINTER - CM765A
HP DESIGNJET 4020PS 42-IN PRINTER - CM766A

HP DesignJet 110plus Printer series

HP DESIGNJET 110PLUS NR PRINTER - C7796E
HP DESIGNJET 110PLUS PRINTER - C7796D

HP DesignJet 110 Color Printer

HP DESIGNJET 110 COLOR PRINTER - C7796B

HP DesignJet 1000 Printer series

HP DESIGNJET 1050C PLUS PRINTER - C6074B
HP DESIGNJET 1050C PLUS REMARKETED PRINTER - C6074BR
HP DESIGNJET 1050C PRINTER - C6074A
HP DESIGNJET 1050C REMARKETED PRINTER - C6074AR
HP DESIGNJET 1050CM PLUS REMARKETED PRINTER - C6075BR
HP DESIGNJET 1050CM REMARKETED PRINTER - C6075AR
HP DESIGNJET 1055CM PLUS PRINTER - C6075B
HP DESIGNJET 1055CM PRINTER - C6075A