Hello, I'm interested in buying this product. I have few questions regarding the specifications, are it is not mentioned here or on the Samsung website. - power delivery: it says up to 90W, but it does not mention the voltage/current standards - RJ45 LAN: which speed is supported? - KVM switch: does the USB hub work only over the USB port? In other words, if I'm connecting the display to a desktop PC, do I still need to connect a USB cable in order for the HUB to work? Thank you in advance