What is PCIe x1 slot used for? - STC-Cable

Not sure why they didn't just link PCIEX1_1 to PCIEX4 as that slot usually becomes unusable due to the GPU also, i can't seem to find any

The PCIEX16_1 slot supports PCI-E x16 graphic card output from onboard CRT and DVI port video output from onboard CRT and DVI port graphic card

pg slot entrance slot; but, there is a note in the manual stating: Due to a hardware limitation, the PCIEX1_1 slot can only accommodate a shorter PCI Express x1

piramida slot *1: The PCIEX16_2 slot shares bandwidth with the PCIEX1_1 slot, PCIEX1_2 slot and USB3_34 connector The PCIEX16_2 runs at x1 mode by