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.
In contrast, many of the available PCIe-based storage products are based on the PCIe 2.0 standard, which has a throughput of 500 Mbps per lane. It is the number of lanes that dictate the overall available throughput. A 16-lane system, for example, can achieve speeds of up to 8 Gbps.