Bought as a spare for my HP Laserjet 400 Color but was a driver issue so don't need this. RM1-9153-000CN Duplexing Paper Feed Assembly for HP PRO400 M401 M401d M401dn M401dw M401dne M425 M425dw 401 425 Duplex Unit Product DescriptionType Duplexing Paper Feed Assembly Model PRO400 M401 M425 Part Number RM1-9153-000CN Brand NI-KDS
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