How to tell what version of PCI Express slot your system has?

PCIe slot description pcle slot For example, a PCIe x8 card could plug into a PCIe x16 slot However, PCIe bus slots are not backward-compatible with connection interfaces for older bus pcle x1 slot The smallest PCIe slot will run at x1 speed, while a full-size PCIe slot will run at x16 PCIe x16 slots are generally intended for use with Graphics Cards

pcle slot Keep the PCI-E slot stronger and safer EZ Debug Led Onboard LEDs will Lightning Fast Game experience: PCIe slots, Lightning Gen 4 x4 with