Buy HP - Hewlett Packard C8947A-ADF_INPUT_TRAY
ADF tray ( for automatic document feeder) this is where papers are placed for feeding into unit. For DeskJet 3420
HP - Hewlett Packard
OEM (Original Equipment Manufacturer) - this item is the original item from the manufacturer sold as brand new.
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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