I have purchased Asrock z370 Extreme4, Where there are three m.2 slots. Among One near vga slot is for M.2 E card, the wifi bt . Even in user manual it just says 2230 module only. But it gives picture as 30mm length. but nothing about width. Here is the problem. As intel m.2 broucher , the opt module 8265 and 2230, no M.2 E card with 22mm width and 30 mm length, 2.6 g weight is found to buy. Is there any guidelines. Advance thanks.