I've taken my 702x (with NVIDIA 3D) apart 4 times. The atenna and slot for the WWAN are there. I'm going to replace the fan, install a Dell D637N - Wireless 5600 3G Mobile Broadband EVDO HSPA WWAN Mini PCI-E Card and install (2) 500gb solid-state disk drives and upgrade the 4x4 (16gb Ram) to 4x8 (32gb Ram). It's 2019. This is a $2,400.00, 2012 rig. It's time for it to max out and get tough or get replaced. Wish me luck.