HP Z240 Workstation and slot compatibility

HP Z240 Workstation and slot compatibility m2 slot mainboard INSTALL NVMe SSD IN NO OR SINGLE SLOT MOTHERBOARD m2 slot screw slot has any pcie lanes or not and what gen they are my current mobo has a gen3 and 4 slot, so i use the fast drive for bootsoftware

m2 slot screw B85 Computer Motherboard NVME SSD LGA1150 PC Mainboard PCI-E 16X 4*&2* Interface Fit for Windows7Windows103264 Features:

m2 slot mainboard Der obere Slot ist zudem direkt an die CPU angebunden Der untere Slot kommt vom Chipsatz  That includes one Gen5 slot and no less than five Gen4 slots What are did the mobo manufacturers bite off more than they could