Genuine Konica Minolta Drum Unit Roller AACJ BizHub DR-314 C308 C368 C308. Konica Minolta Developing Unit for BizHub C308 C302301 C368 C308. This was pulled from a brand new unit, but the factory does do a test before they send so there is some toner on it. The copier powered and this part is fine as it was only a cosmetic dent. This listing is for the developing unit only. Picture of the copier shown only to prove it powers. If there's something you're not sure about or have a question about anything, just send us a message by clicking "Ask a question" below the listing.