You're changing an 802.11n laptop to an 802.11ac laptop. What internal port will you MOST likely use?

Mini PCIe is intended for small devices such as laptops. PCI and PCIe are both found on desktop. PCIe x16 (pronounced as by 16) is frequently used for high-speed video. PCIe x1 is widely used in a variety of devices. Mini PCIe x16 is not available.