Wiktionary(3.00 / 1 vote)Rate this definition: 1  exclusion(Noun) The act of excluding or shutting out; removal from consideration or taking part. 2  exclusion(Noun) The act of pushing or forcing something out. 3  exclusion(Noun) An item not covered by an insurance policy.
The Peripheral Component Interconnect or more commonly known as PCI is a standard for connecting a lot of devices inside your computer to extend its capabilities. Devices like sound cards, modems, NIC, TV Tuners, and some video cards have at some point or another have used the PCI port. The latest version of PCI known as PCI express is a much improved version in terms of speed. PCIe uses a serial interface instead of the old parallel interface used by PCI. It also utilizes individual buses for each of the devices connected to it instead of a shared one like what PCI uses.
The thing is, M.2âs PCIe connectivity has coincided nicely with the migration of SSD drives to PCIe, to sidestep the 600MBps limitation of the SATA bus. The marriage of PCIe and the SSD has resulted in uber-fast storage for your PC. PCIe SSDs simply blow their SATA brethren out of the water in terms of sequential throughput, and in the case of NVMe, queued small writes. When I say uber-fast, Iâm talking nearly four times the speed of SATA. Yup: 2GBps.