PCIE GPU on PCIE MOBO

pcie 2 0 x16 slot   Dan pcie slot width

Taking a look at the slot may not help you to specifically determine whether your motherboard has a PCI express port

The system also provides extensive functional expansion options, including one PCIe slot, an 2230 E-Key for Wi-Fi, and an 3042 PCIe x 1 for RTX 4080 Super 30423052 B-Key x 1 + MicroSIM Slot 2230 E-Key x 1 TPM, TPM Onbaord Indicator, System LED x 1, HDD Activity x 1

scatter slot machine NVIDIA NVS 510 graphics board, Full Height Bracket , Low Profile Bracket , Four locking m-DP to DP Adapters, Four locking m-DP Is this also true of all other devices like this? I was assuming they could all reach the 1000mbs that the pcie slot could reach (plus reviews