HP Deskjet 2540 All-in-One (A9U22A)
MFG Part Number: A9U22A
7ppm black, 4ppm color, USB 2.0, Wireless LAN
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Carriage PC Board parts for A9U22A HP Deskjet 2540 All-in-One Printer
A9U22A-Carriage_PC_BRD
Carriage PC Board - This pc board attaches on the carriage, it is usually a small pc board that has carrage cable attached to it.
Deskjet 2540 All-in-One Printer parts list