TCNEWCL 8 Port KVM Switch HDMI, 4K@30Hz, 8 in 1 Out, 4 USB Devices, IR Remote & 8 HDMI Cables

Can this be used with two or more monitors?

How long is the 2 in 1 cable? Do I need to buy separate?

Just received my 8 port switch and the remote does not work. I tried a new battery but still doesn't work. Can I get a replacement remote?

How do i troubleshoot? i purchased this kvm but one of the ports isn't working. tried switching cables with another port, still not working.