HP ENVY 7640 e-All-in-One (E4W43A)
MFG Part Number: E4W43A
14ppm black, 9ppm color, 1200 x 1200 DPI, 2 USB 2.0;1 Wi-Fi 802.11b/g/n;1 Ethernet;1 RJ-11 (Fax)
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AC Adapter parts for E4W43A HP ENVY 7640 e-All-in-One Printer
E4W43A-AC_Adapter
AC Adapter - Power supply module or adapter - one end for connecting to the printer and other end to the power cord, or your ac adapter may have the pwr cord attached.
ENVY 7640 e-All-in-One Printer parts list