I have had my dongle replaced before and Logitech has a process to update the pairing. The software to do so may only run on Windows however.
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Looks very like my Nulaxy. Pushing one button on my KVM is the easiest thing I can imagine and it works nicely.
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I keep it simple. 2 computers, on separate desks, each with its own KB, mouse, and monitor. Pure redundancy. If someting fails, only one is affected.
I think I will get a backup wired mouse and maybe KB… more redundancy.
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@nevj
Awhile back one of our friends brought me an old desktop pc with W98, still in use!!! I had to end up using an old track and ball mouse and my PS2 keyboard, just too maneuver around, nothing wrong with redundancy and keeping old hardware, that still works.
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I did as you suggested, just to tide me over until I order what I really want .
At the moment I am leaning towards a Logitech MK650 combo set. It has a Bolt receiver.
There are 3 grades of Logitech usb receiver
- original nano receiver
- unifying receiver
- bolt receiver
Only the Unifying receiver allows devices to be interchanged
The Bolt receiver is supposed to deal better with lag issues.
We shall see.
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Yes. But when you use a combo, then both the KB and the mouse uses same RF dongle. So, if one gets damaged, then you have to change either the full set or have to purchase a separate mouse, either a wireless or wired.
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In that case, it may not be noticeable enough but the connection speed between each of those devices will suffer and eventually they will slow down over the time because they share the single route to connect and more devices on a single route of connection means congestion.
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Yes, unless you have a unified receiver from Logitech.
You can pair multiple keyboards and mice to such a receiver, assuming those keyboards and mice are from Logitech too…
So the “unified receiver” solves the problem of the combo.
As I got addicted to backlit keyboards, I use wired keyboards and mice.
But! If I needed wireless, I’d go for the unified receiver which brings the flexibility of changing devices to the wireless world.
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I also use backlit wired KB and mouse. It relieves me from the hassle and the recurring expense of changing batteries. And sorry for the typo… “chamge”. It would be ‘change’. 
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Didn’t even notice… 
I have an auto-error-correcting reader unit built in my glasses. 
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Suggest to buy a wireless mouse with separate USB dongle ,but of course that dongle needs a separate USB port . I use on a laptop a compact multi USB adaptor with 3 USB ports (i.e 2x USB3 + 1x USB20 ) ; very handy .
Frank in County Wicklow -Ireland
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I understand that thanks. I am prepared to wear it.
Combos are slightly cheaper than buying things separately, and there is less confusion with only one receiver. .
I could buy an M650 and a K650 separately and have 2 receivers. Will think about it.
I have read reports that the unifying receiver is a bit laggy… that is why I am going for the bolt receiver. If I am going to have wireless, I want top grade wireless.
The wired mouse is fine as a temporary measure.
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The hub is connected to either one computer or the other. Not both at the same time.
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That’s good. In my experience, wired KB is required if you want to go into BIOS setting. Motherboard doesn’t recognise a wireless KB or mouse when you are entering BIOS because any wireless product works in the OS environment. Without the driver, the computer cannot recognise any wireless device and device drivers, specially for wireless ones, are not included in the BIOS. So, this is the main problem for me on using wireless KB and mouse as I need to use BIOS BOOT MENU everyday because I have installed Windows and Linux in two separate SSDs. But I don’t know, I may be wrong but it seems that newer motherboards like Gigabyte B450M-DS3H-WIFI also doesn’t recognise wireless KB and mouse while entering BIOS.
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Yes, I know. But the data transmission route is single whereas in case of USB ports embedded in motherboard use separate route for each of them. That’s why they are fast. But if you try to use several USB devices through a single route like a hub, they will get slower. You can experiment it by connecting all the port in the hub along with an USB drive and connect another USB drive in the USB port on the back of the motherboard, not in the Front Panel USB. Then transfer some large files from both USB drives at the same time and the file size must be the same. See what difference it makes. Then we will understand whether the hub connection is lagging or not. You can share the result here if you want.
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My bios works with the wireless mouse and wireless keyboard?
I do remember that used to be the case
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Oh yeah. That’s true. The device creating the most traffic on this hub is the webcam. Largely not in use. That thumb drive just has a few files I don’t reference very often but put there because it’s available.
Good point though. All the OS drives on the laptop and tower are internal SSDs. I do have a couple external SSDs connected direct to a USB port for backup purposes, but only connect when doing a backup.
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Are you sure?! Can you check it again and confirm so that I can update my knowledge? It will be very helpful.
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Absolutely, I used it last week, before I changed to a wired mouse.
Mine is an AMIBIOS about 12 years old.
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WOW!!! This is new. There are no limit to learn new things irrespective of age. 
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