The motherboard slot #1 shares bandwidth with SATA Gbs

They are fundamentally different, so a PCIe card won't work in a PCI slot and vice versa On most motherboards, the PCI slots are made of white

PCIe SSDs can directly plug into PCIe slots, often utilizing the NVM Express connector type While a SATA hard drive may not achieve

sata 3 slot 3 x4 lanes of up to 4000MBs Not to say that speed is 2 SATA is just a complete wasted

sata m2 slot The PEXMSATA3422 PCI Express SATA Card helps you improve the overall speed and storage capacity of your computer by giving you multiple 6 Gbps SATA connections