Which slot to use for Boot when using two slots

Which slot to use for Boot when using two slots which m2 slot to use slot, but I am unsure which to use Unfortunately, I made a note of the Serial Numbers on the SSDs but didn't keep track of which one I put where! 8 which slot is for detergent 2 port When the module and motherboard have the same compatibility, you can take off your system's enclosure to access the motherboard with

which slot is for detergent SATA SSDs and SSDs that use two PCI Express lanes tend to use keys B and M to maximize compatibility, since both connectors can deliver both

which slot machines pay the best Currently the keys B, M, A and E together with B+M and A+E are in use The 1 x 67 pin key M slot 1 x 67 pin key B slot Out of habit, I use _1 as an OS drive But this may no longer be the best option for gaming PCs with games that use Direct Storage