Buy HP - Hewlett Packard C8947A-CARRIAGE_PC_BRD
This pc board attaches on the carriage, it is usually a small pc board that has carrage cable attached to it. For DeskJet 3420
HP - Hewlett Packard
OEM (Original Equipment Manufacturer) - this item is the original item sold from the manufacturer.
Refurbished is the process of reselling an item that had been in good working order. Refurbished items are dis-assembled and restored to "like new" condition.
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