I am using a KVM switch to enable me to use one keyboard, one mouse, and one monitor with two computers.

The last time I did this was some 10 years ago, when I was using an Acorn RISC PC and a Windows machine.

There was a key combination which allowed me to switch between computers, instead of hac=ving to manually reach over and press the switch on the KVM control box.

I thought the combination was Ctrl+1 (or Ctrl+2) but this doesn't work.

Does anyone know the combination, please?

I assume it would depend on the particular make/model of switch but the ones I've used had the sequence of pressing the scroll lock key twice followed by the 1,2,3 or 4 keys...

The KVM switch I used to use wanted me to press "Scroll Lock" to switch back and forth between two boxes, I think because it's a key that's almost never used any more.

I'm using a USB one now (one of the computers I'm using now does not have PS2 mouse and keyboard inputs, but it works fine through adapters with the older computer, which does); it has its own separate button for changing boxes.

Afterthought: If you can find any information about the manufacturer on the device, you might be able to find the docs on the website.

Thank you michaelk and frankbell for your prompt response.

The make is Rextron and the model number is KNV102. I have been to the Rextron website since I posted the question her but that model number does not seem to be listed :-( However, I have put the same question to them through the Contact page. Will report if I get a response.

The Rextron KVN102 (same as KNV102?) manual is here. It says the basic hot key sequence to switch between computers is LeftControl, LeftControl+1 (or +2) and details several others which all begin with LeftControl, LeftControl

Yes, definitely a KNV102 (as the Manual says) and I'm delighted to report that it works perfectly. So, my problem is solved and I'm a very happy geiatric :-)