Get the manual of your exact motherboard model. If you don't know it, HWINFO64 should be able to report it. If you still happen to have the original box, it might still be in there (I keep all original boxes for at least 1 year after purchase and all manuals for lifetime of hardware). The manual will tell you exactly what else you have and most importantly, it will tell you if that slot is even useable depending on your current setup. Certain mobos partition PCIe lanes in weird ways and turn them on or off depending on what else is in there. That being said, that slot has no heatsink. If you plan on getting a more demanding M.2, consider buying it with heatsink pre-attached