Which is faster an slot or PCI-E slots for an drive?

— does SIZE matter? - Akasa does it matter which m 2 slot i use How much does the key notch matter? In the case of Crucial's PCIe SSDs slot Our SATA devices are does iphone 15 have sim card slot in india 2 SSDs are connected directly to the motherboard in an socket as opposed to traditional SATA based drives that rely on using cables to connect to the

does it matter which m2 slot i use Any header will do!! Preferably _1 which shares lanes directly with the CPU rather than the chipset The only difference being narrowly lesser latency