I don't think so. M.2 slot for WiFi BT uses a key (A/E key) incompatible w M.2 ssd (M or B+M key). [URL]  
Is it possible to remove the M.2 WiFi/BT card and replace it with an additional M.2 SSD?
XPS 8940, remove M.2 WiFi/BT card, add M.2 SSD?