While the WiFi Pineapple has support for MT7612U and MT7601U devices out of the box, you can also install drivers for a wide range of other chipsets, such as other MT76-based devices, ath9k and ath10k devices, and some Realtek dongles.
To find drivers, you can use the Package Manager found in the Web Interface under Modules > Packages. Search for keywords related to the chipset in your adaptor.
More information about your specific adaptor can usually found with resources such as WikiDevi.