As the key positions of b and m are slightly different the m.
													
																	M2 key m. 
									
	
		
	
																	B m or b m while a socket can only have one key. 
																	An m 2 ssd is keyed to prevent insertion of a card connector male to an incompatible socket female on the host. 
																	Employing a more flexible physical specification the m 2 allows different module widths and lengths and paired with the. 
																	Some motherboards are flexible offering mounting holes for the retention screw at some or all of these intervals. 
															
													
									
	
		
	
																	Currently an m 2 ssd has either one of three key types. 
																	The m 2 specification identifies 12 key ids on the module card and socket interface but m 2 ssds typically use three common keys. 
																	M2 is a measure of the money supply that includes cash checking deposits and easily convertible near money. 
																	B m and b m. 
															
													
									
	
		
	
																	22 millimeters wide by 110 millimeters long. 
																	M 2 replaces the msata standard which uses the pci express mini card physical card layout and connectors. 
																	Ssd can only be installed one way. 
																	M 2 formerly known as the next generation form factor ngff is a specification for internally mounted computer expansion cards and associated connectors. 
															
													
									
	
		
	
																	22 millimeters wide by 80 millimeters long. 
																	A b keying pins 12 19 gives pci express ssds up to 2x lanes of bandwidth while a m keying pins 59 66 provides pci express ssds with.