Why are there two pc inputs for display and power? the point of usb-c is to carry all of that over one cable, right?

There are 2 power inputs that you have to supply the power to. If you supply it, that travels through the switch to the computers. If not, you connect them directly to their alternate power supplies. That said, there are two of them, on for each device. When you connect the devices into the switch, everything else goes through the KVM. Including any devices you connect to the KVM on USB, such as webcams, keyboard, thumb drives, etc. I do have strange issues when connecting and disconnecting my laptops. Some times it stops charging the other one and then I have to plug it in again. Outside of that, this KVM works very well.

I have two computers that i alternate plugging into one monitor with a usb-c cable. will this work, or does my monitor need to support hdmi?

I use this as a switch between 2 computers to a dell triple-monitor docking station to switch 3 monitors between a work computer and home PC and it works nicely. I connected the docking station to this kvm switch through the keyboard/mouse USB connection and it works well so far(only been about 2 weeks). I can tuck it all nicely away and just have the toggle switch within reach. The toggle is magnetic and come with a metal pad you can put anywhere with an adhesive backside. I have no complaints so far.

I hope to use this as an "imaging station" for laptops & desktops. I understand that this will not power desktops, but will it pass/switch usb&video?

Yes. Just remember it's a "hard switch". Meaning when you switch to PC2, as far as PC1 is concerned you just unplugged your keyboard, mouse and monitor. Windows tends to lose track of it's open windows when you do this and you have to put them all back when switching back. So if you are looking for a solution where you can quickly switch back and forth you might need to go the route of a more expensive traditional KVM that emulates the K/M and video to the host computer(s).

Does this device support edid? or in other words, will switching between computers be equivalent to disconnecting the monitor?

it is equivalent to disconnecting the monitors, because the computer "not selected" will not recognize the monitors (like in display settings), however, when you switch back, it does detect/maintain and resolution/ display settings you had, like orientation or resolution. I have this for switching a triple-monitor docking station between a work and personal computer.

Manufacturer	SABRENT
Part number	USB-CKDH
Item Weight	381 g
Product Dimensions	17.4 x 6.4 x 19.05 cm; 381 g
Item model number	USB-CKDH
Size	Dual Display
Colour	Black
Style	KVM Switch 2 HDMI Out
Power source type	Corded Electric
Voltage	60 Volts (AC)
Wattage	60 watts
Item Package Quantity	1
Light source	LED
Switch Type	2-way
Included components	KVM Switch
Batteries included?	No
Batteries Required?	No

SABRENT KVM Switch - 2 Port USB-C Inputs, 60W PD 3.0, Dual HDMI, Thunderbolt Compatible, Control Two PCs with One Monitor

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