长期以来，硬盘一直是计算机的瓶颈。Although it has a solid state hard disk, it is still unable to change this situation.The bandwidth limit of SATA 3 interface specification is 6Gb/s, which is about 600MB transmission per second, but the latest solid state hard disk, such as OCZ RevoDrive, has reached 1300MB/s. The existing SATA interface has been unable to meet the needs of equipment.To this end, the international organization of serial ATA (SATA-IO) 2011 announced at the end of the new SATA connection standard SATA Express, the new interface, SSD can PC 1-E 3 data transmission, SATA-IO set up a total of two versions, the data throughput is respectively 8Gb/s and 16Gb/s, the data transmission rate at about 1GB per second and 2GB.At present, there are two versions of SA主板上的一个Express接口，目前仍在计划中。第一个可以通过PCI-E线相连，二是与旧的SATA驱动程序兼容，和主板制造商需要决定要使用哪个版本。在2012年中，我们可以看到主板符合新标准。