Acer TravelMate P653-M Service Manual page 175

3. Connect the main and auxiliary antenna cables to the WLAN module.
+
IMPORTANT:
The main antenna cable (black) should be attached to connector near the
module screw; the auxiliary antenna cable (white) should be attached to the
connector near the lower case cable opening.
Figure 1-173. WLAN Module Antennas
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Machine Maintenance