Dell Precision M4800 (Late 2013) - Manual (Page 46)

h) battery
4. Follow the procedures in After Working Inside Your Computer .
Removing the System Board
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the:
a) SD card
b) ExpressCard
c) battery
d) base cover
e) keyboard trim
f) keyboard
g) optical drive
h) hard drive
i) primary memory
j) secondary memory
k) processor fan
l) video-card fan
m) palmrest
n) heat sink
o) processor
p) video-card heat sink
q) video card
r) I/O board
s) display assembly
3. Disconnect the coin-cell battery cable.
4. Disconnect the USH connector cable and wi-fi switch cable.
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