Help with KVM Switch (Work Laptop functions, but PC doesn't)
Help with KVM Switch (Work Laptop functions, but PC doesn't)
Hi!
I previously had two desks for my two configurations: one with my work computer (laptop and monitor linked via USB-C) and another for my personal PC (PC and monitor connected by HDMI).
Now I have a bigger desk, so I decided to combine them using a UGREEN USB-C KVM Switch.
My work laptop is connected through USB-C to USB-C, while the two monitors link to it via HDMI-HDMI.
It functions well, allowing me to use both monitors with my laptop.
But when I try to switch to my PC, it doesn’t work.
I used an adapter (Sonnet Displaylink USB-C Dual HDMI Adapter), but it didn’t help because the KVM Switch has two USB-C inputs.
My goal is for the UGREEN KVM Switch to act as a bridge between my work laptop and my PC.
Looking forward to your response!
Ensure all connectors and adapters are physically compatible.
Not every compatible device guarantees functionality; pin configurations must align.
Use a straightforward diagram illustrating all equipment, including the KVM switch.
List desktop, laptop, switch, and monitor connections fully.
Specify port types, genders, and cable details clearly.
The goal is to provide a clear overview without unnecessary complexity.
Search for "KVM switch diagrams" and select relevant images.
Highlight which components work and which do not on the visuals.
Carefully examine the pin-outs to confirm suitability.
I'm not sure if this is the optimal method to display images, but I've uploaded it on imgur and shared the link.
In short, I think the connection between my PC and the KVM Switch isn't set up correctly. It needs a USB-C male input, while my PC's output uses HDMI. I hope the diagram clarifies this!
https://imgur.com/a/53MfCZp
View: https://imgur.com/gallery/kvm-switch-help-53MfCZp
Also, I'm certain all cables and ports are functioning properly!
Thanks a lot,
Ben
The diagram looks good according to my understanding of the needed connections. The PC side needs a cable with a male HDMI port that fits into the female HDMI slot, while the other end should use a male USB-C connector for the KVM's female USB-C port. For instance, a cable similar to this one (not a recommendation) could work: an HDMI to USB-C cable example. In practice, the physical connection might match the required connector types, but the actual pin layout inside the devices isn't guaranteed to align correctly. I recommend checking the pinout diagrams online—links like those from wiremystique or electicschem are useful. Also, consider the make and model of your monitors. If you can follow the cable connections closely, it might be possible to set up a direct link between the laptop and the monitors without additional adapters. The idea is that a male-to-male setup reversed between the PC and KVM should function properly. If not, it may indicate issues with the KVM ports or USB-C connectors. There could be other suggestions available, and I’m open to any ideas you have.
The example you shared is exactly what I needed. I purchased it last week expecting it to function, but it didn't work. After researching, I believe the issue lies in the cable not supporting USB-C video output natively. Also, the KVM switch seems to operate correctly since I tested the laptop input through both USB-C ports. Would you consider needing an adapter to connect your PC to the KVM switch using an HDMI male output and USB-C male input?
The main concern revolves around direction, since sending an HDMI signal to a USB port needs an active converter. Numerous adapters available aim to let a device with USB video output connect to a monitor via HDMI input. However, the user requires the opposite: a converter that transforms HDMI signals from their desktop into USB signals for the switch and then the monitor. These specialized converters are rare. Even some bidirectional units can handle both directions, but this isn’t what the user needs. I discovered information online about such setups. Cables supporting multiple directions exist, like HDMI to USB-C, HDMI to USB-C, and HDMI to DisplayPort, but connecting a USB-C monitor to a PC without USB-C is challenging.
Hi Paperdoc,
That's a great resource, thanks! Based on what you described, I’d explore products in category 3: hdmi -> usb-c, depending on the HDMI output available.
Best,
Ben
You might notice that "reverse" type adapters are available elsewhere, but it seems many sellers don't make it clear whether this matters. Also, the right connector types on cable ends don't indicate the correct adapter you need.
If your UGREEN switch includes its own power supply module, you won't require an HDMI-to-USB adapter to power it. But if the switch lacks its own power source, it relies on the USB port from your selected computer (via a pushbutton), meaning the adapter must provide that power.