Up link: Oculink 4i(PCIE4.0x4) Down Link: PCIEx16(PCIE4.0x4) Power: ATX/SFX Power Button: ForcePowerOn with LED x 1 Note1: OCulink interface does not support hot plugging, and the machine needs to be turned off. Note2: OCulink connector has a fixed locking interface, and you need to press the switch to unlock and unplug it. Forced unplugging will cause damage to the ports. Note3: The follow-start function is only compatible with MINISFORUM Mini PCs, and requires the use of original wires.