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2. What do I need to Install the KVM?

How do I connect KVM | how to install? | What else will I need? | Missing Connections | 2 Port Diagram | 4 Port Diagram | 2 PC setup | Wiring diagram for Dual Monitors | Setup Dual Monitor | How to setup Dual Monitor KVM

Keywords: HKS401-E23 (Previously HKS0401A2U),HKS201-E23 (Previously HKS0201A2U),2 in 1 out,4 in 1 out,2/4 Port Dual Monitor KVM Switch

2x1 & 4x1 Setup Guide

Each computer needs to have a video and a USB connection.

Inputs 1~4:

can be connected to all types of computers, e.g., desktops (simple HDMI and USB connections), laptops with a dock (not always needed), laptops without a dock (may need an adapter), Raspberry, etc.


connects to a dedicated keyboard/mouse port


connects to the KVM output port

USB 2.0/3.0:

connects to additional peripherals (camera, printer, speakers, etc.) If more than 1 device is used, a USB hub is required (make sure it is externally powered, the KVM power supply only ensures that the KVM itself works)


Dual Monitor Setup Diagram


Simple wiring diagram for Dual Monitor KVM


Each computer has 2 video connections & USB connection.

Input 1:

Laptop with dock (not always necessary, could possibly need an adapter. 

Input 2:

Desktop (Connected to the GPU video ports, not the motherboard)


Connect to dedicated keyboard/mouse ports


Connected to KVM output ports

USB 2.0/3.0:

Connects to extra peripherals (webcam, printer, speakers, etc.) USB Hub necessary if using more than 1 device (Make sure it's externally powered)


How long of a cable can I use?

  • A cable that is 30 ft or less can transmit high-definition (1920×1080) quality at 60Hz
  • A cable that is 15 ft or less can transmit Ultra HD (3840×2160) quality at 30Hz
  • A cable that is 10 ft or less can transmit Ultra HD (3840×2160) quality at 60Hz

My Laptop only has a single HDMI or No HDMI port, How do I get video connections? 

  • Most Laptops have a USB C Port, MiniDisplay Port, Thunderbolt 1 and 2: Mini DisplayPort; Thunderbolt 3 and 4: USB-C. Therefore if you have a Type C on your laptop and need HDMI Port you will need a Type C to HDMI Adapter. There are some USB-C ports that can only power laptops and cannot transfer audio and video information. Contacting the customer service team ( has confirmed the compatibility of the adapter with KVM. 

I have speakers,  printer,  USB headset,  webcam, etc. Can I connect this? 

  • Yes, all TESmart KVMs have a USB 2.0/3.0 port that can support any of these devices. Since it is a single USB 2.0/3.0 port you will need a powered USB hub to connect more devices. 

Do I need a docking station? 

  • No not all computers need a docking station. We recommend docking stations for computers that do not have the necessary ports available, in most cases adapters can solve this (Docking stations are often expensive). 

Will my Apple Magic Keyboard and Magic Mouse work? 

  • No these devices are connected via Bluetooth so they will bypass the KVM and connect directly to the computers. The KVM does not have built in Bluetooth, if you can pair a Bluetooth dongle receiver to a device then this can be connected to the USB 2.0/3.0 port on the KVM.

What can I do if the mouse does not respond correctly?

  • Occasionally the mouse movement for Mac operating systems may jump. Please try using the USB 2.0/3.0 port for your mouse input. If problems continue, please confirm the mouse works correctly when plugged directly into the PC that exhibits the issue. Logitech or keyboard software installed into the computer can cause issues, uninstalling this software can fix the interference.

Why does my multimedia keyboard not transmit multimedia functions (play, pause, etc.)

  • Unfortunately, not all multimedia functions are passed through the KVM to the input PC.  We recommend trying the USB 2.0/3.0 port but we cannot guarantee all multimedia functions.

Why does the monitor not fit when I connect my TV to the output?

  • On occasion TV's will exhibit "overscaling" issues. This is due to the input device, typically a PC, having a slightly different resolution than a television. There are a number of ways to correct the issue by making adjustments to Windows and Mac operating systems.
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