What exactly does the spec “PCIe x16 slot ” mean?

PCIe X16 Cable Graphics Card Support GPUs no more than 140 x 325mm GPU Slot GPU 140×325×25 CPU Maximum Height 88mm GPU Slots GPU

slot fanout module in a PCIe Gen3 IO drawer are SR-IOV enabled An #EMX0 PCIe x16 to Optical CXP converter adapter and two m

pciex16 slot If you have the option of multiple slots where at least one supports PCIe, it's worth considering your secondary slot for an SSD upgrade When combined with

how to win a slot tournament EZ-Latch：PCIe x16 Slot & Connectors with Quick Release & Screwless Design; Fast Networks： LAN & Wi-Fi 6E ; Extended Connectivity：HDMI