The XPS™ M1210 offers two LCD hinge up assemblies: One with the integrated camera and one without the integrated camera.
The XPS M1210 with the integrated camera has five antenna leads running from the LCD to the mini-card locations. (Figure 1)
Figure 1 - Antenna Leads on the XPS M1210 With the Integrated Camera
The white and black antennas labeled 1 and 2, respectively, are for the WLAN cards. The antenna labeled "3" is reserved to support upcoming 802.11n WLAN cards. The gray/black and gray/white antennas labeled "4" and "5," respectively, are for the WWAN cards.
The XPS M1210 without the camera option has only three antennas that are used by the WLAN card. (Figure 2)
Figure 2 - Antenna Leads on the XPS M1210 Without the Integrated Camera
This version of the system does not contain any wireless antennae for the internal WWAN mini-cards. | 
The Dell™ XPS™ M1210 without the integrated camera does not have any wireless antennae for the internal WWAN mini-cards.