4 Port Black PS/2 KVM Switch

Questions & Answers

How do I set up my KVM switch?
Turn off all of the computers and monitors that will be connected to the KVM switch. Connect the power adapter to the KVM switch. Connect the video cables from your monitors to the console video port on the KVM switch. Turn on the monitors. Connect your keyboard and mouse to the console PS/2 or USB ports on the KVM switch. If you have not done so already, change the KVM switch to focus on port 1. Connect the video cables from PC1 to the KVM switch. Connect the PS/2 or USB cables from PC1 to the PC1 PS/2 or USB ports on the KVM switch. Turn on PC1. You should see the computer load the operating system that you are using on PC1. Make sure that the mouse and keyboard can control PC1. Repeat steps 4 to 8 for each additional computer that you want to connect to the KVM switch. Leave the computer in focus until you make sure that the mouse and keyboard can control the computer in step 8.

My Monitors are flickering when connected through the KVM Switch. What do I do?
Monitors may begin flickering when they receive a signal of insufficient quality. There are a few potential fixes available that will help to improve the signal quality in order to eliminate flickering: Replace Video Cables with high-quality Video Cables (e.g. upgrade DisplayPort 1.2 Cables to DisplayPort 1.4 Cables ). Use shorter Video Cables to reduce signal attenuation. When possible, remove Video Adapters to use native Video Connection Types (e.g. go from VGA to VGA , or DisplayPort to DisplayPort ) For DisplayPort Monitors , try changing the DisplayPort Version on the Monitor . For information on how to change your Monitor Settings refer to the Manual from the Monitor Manufacturer . Update the Drivers for the Computer’s GPU to the latest available from the Monitor Manufacturer .

Everything is hooked up but nothing is working. What should I do?
There are some quick tests that you can perform to rule out potential issues. Start by turning off all of the connected computers and peripherals, unplugging everything from the KVM, including power, and leaving it for 10 seconds. Then connect everything to the KVM following the procedure in the following FAQ: https://www.startech.com/faq/kvm-switches-setup . You can test to make sure that the following components are working correctly and are not the source of the issue: Video cables KVM switch Video source (such as a DVR or computer) Video destination (such as a monitor or projector) Note: When you are testing your setup components, it is recommended that you avoid using any video adapters. For example, if you are converting a VGA source to HDMI to be used with an HDMI extender, you should test with an HDMI source. To test your setup components, try the following: Use the video cable, KVM switch, video source, and video destination in another setup to see if the problem is with the components or the setup. Use a different video cable, KVM switch, video source, and video destination in your setup to see if the problem persists. Ideally, you should test a component that you know works in another setup. When you test your cables, it is recommended that you do the following: Test each cable individually. Use short cables when you are testing. When you test the video source and video destination, it is recommended that you do the following: Remove the KVM switch from your setup and test to make sure that the video source and video destination work together without the KVM switch. Test to make sure that the video source and video destination work together at the resolution that you want to use. Note: In order for your setup to work properly, the video source, KVM switch, and video destination all need to support the resolution that you are using.

Certain KVM ports or computers are working but not all of them. What do I do?
There are four troubleshooting actions that you can try if some but not all of the ports and your computer are working with the KVM switch. To determine if a specific cable is the source of the problem, switch the cables that connect the KVM switch to the computers to one working port and computer, and one port and computer that is not working. Keep the computer plugged into the same ports and only switch the cables. If the issue persists when you switch cables, the issue may be with the cable itself. To determine if the problem is between the computer and the KVM switch, using the same cables, connect the KVM switch to one computer that is working and one computer that is not working. If the issue persists when you switch computers, follows the issue may be with the computer and the KVM switch. Try reinitializing the KVM. This is done by following the setup instructions on the website. To determine if the KVM switch is the source of the problem, if you have another KVM switch, disconnect the current KVM switch and connect the second KVM switch.

My keyboard keeps repeating keys when it is plugged into the KVM. What do I do?
If the keys on your keyboard are repeating, complete the following: If the KVM you are using has USB ports, you can move your keyboard to the USB hub port on the back of the KVM (the USB hubs are marked). Note: When you move the keyboard out of the keyboard port, you will not be able to access the hotkeys. You can adjust the typematic rate in your operating system’s settings. Depending on the version of Windows you are running, you can adjust the typematic rate by doing one of the following: Click Control Panel > Keyboard > Speed . Adjust the repeat delay and repeat rate until the keys no longer repeat. Click Control Panel > Hardware and Sound > Devices and Printers . Right-click Keyboard Settings . Adjust the repeat delay and repeat rate until the keys no longer repeat.

What DC barrel connector power plug types do StarTech.com products use, and what are their dimensions?
StarTech.com DC barrel connector plug types are defined in the “Plug Type” field of the technical specifications, using a letter code that specifies the connector’s outer diameter (OD) and inner diameter (ID) in millimeters for power adapter compatibility. Explanation: In StarTech.com technical specifications, the “Plug Type” field is a standardized identifier for the exact DC barrel connector size required to power a product. Each plug type is assigned a letter code that corresponds to a specific combination of outer diameter (OD) and inner diameter (ID), measured in millimeters. Common DC barrel plug type dimensions Plug Type OD ID A 2.35 mm 0.7 mm B 4.0 mm 1.7 mm C 4.75 mm 1.7 mm H 3.4 mm 1.3 mm L 5.0 mm 2.5 mm M 5.5 mm 2.1 mm N 5.5 mm 2.5 mm The DC barrel connector plug type must match both the outer diameter and inner diameter exactly. A mismatch between the StarTech.com product requirement and the power adapter connector can prevent proper fit or stable power delivery, which may result in device startup failure or intermittent operation. The plug type defines only the physical connector size. The plug type does not define electrical power requirements such as voltage, current, or polarity. The power adapter used with a StarTech.com product must match the product’s specified electrical requirements. Using an incompatible power adapter can cause device malfunction or permanent damage. This standardized DC barrel connector plug type system enables IT professionals and procurement teams to verify connector dimensions, ensure power adapter compatibility, standardize hardware deployments, and identify the correct replacement power supply for StarTech.com products.