(Flash memory particles and master controller chip inside the SSD)
SSDs come in a variety of sizes, especially in the first few years when SSDs were first known to the public, with specifications such as SATA-3, SAS, MSATA, PCI-E, and M.2 interfaces dazzling consumers, including MSATA interface specifications and full-height and half-height sizes, and M.2 interface specifications of 2242, 2260, 2280, and 22110 sizes, with two different specifications for SATS rates and NVMe rates. This is due to the fact that SSD products are updated much faster than mechanical hard drives, and the relative complexity of different product applications, coupled with the "personalization" of computer manufacturers, has led to a variety of interfaces and sizes of solid state drives appearing on the market again at one time. By now, many sizes of SSDs have actually faded from the consumer's eye, and perhaps manufacturers don't want to be so complicated. The current mainstream SSD specifications are mainly 2.5-inch with SATA3 interface specifications and 2280 with M.2 interface specifications, where the 2280's M.2 interface is divided into SATA rate and with NVMe protocol. Players should pay attention when shopping, because as long as the motherboard supports the NVMe protocol, the speed of M.2 SSDs with NVMe protocol is several times higher compared to the speed of ordinary SATA interfaces, but the premise is still the motherboard support.