What expansion and cooling options does the Dell XPS 8940 offer?

The XPS 8940 has two PCIe x1 slots for adding a Wi-Fi card, sound card, or extra USB ports. Its Wi-Fi card is a removable M.2 2230 module for easy upgrades. The CPU cooler uses standard LGA 1200 mounts, so you can swap in any aftermarket cooler without proprietary nonsense.