
US customers who order a Studio 17 or Studio XPS 16 will see a Intel5150 WiMAX/Wireless-N combo card option for a $60 upgrade price fromthe 802.11g default wireless option.

The Intel WiMAX/Wi-Fi Link 5150 designed in two version which are Minicard (MC) and Half-mini card version (HMC).

It can only connect to a 1×2 array,one transmit and two pick-upsantenna. We don’t know which version is in Studio 17 nor in Studio XPS16.Presumably it’s MC version, because HMC version mostly fit best innetbook,UMPC or MID.
source:http://www.wimaxian.com/2009/05/06/dell-offering-studio-17-and-studio-xps-16-with-wimax-option/