Dell Inspiron 14z (N411z, Late 2011) - Manual (Page 74)

74 System Board
12 Disconnect the DC-in connector cable and the speaker cable from the
connectors on the system board.
13 Lift the securing latches and disconnect the USB-board cable from the
connectors on the system board and the USB board.
14 Lift the securing latch and disconnect the media-card reader board cable
from the connector on the system board.
15 Remove the four screws that secure the system-board assembly to the
computer base.
16 Carefully ease the ports on the system-board assembly out of the slots in
the computer base and lift the system-board assembly out of the computer
base.
1 DC-in cable connector 2 USB-board cable connectors (2)
3 speaker-cable connector 4 media-card reader cable connectors
(2)
1
2
3 4