Are the black imaging units for the C550/C650 the same?

[projectsome]

I'm pretty sure the bizhub c550 uses a different black imaging units to the c650. I ask this because I'm pretty sure when ordering for the 550 I get for the 650.

[suomi]

IU610k>>c451 & c550 & c650

[Gleq]

I'm pretty sure the bizhub c550 uses a different black imaging units to the c650. I ask this because I'm pretty sure when ordering for the 550 I get for the 650.

yes

[pepper38_cnd]

Image units are the same. The Black Toners are keyed differently.