Question keyboard adapter PS/2

[Novel8]

A few months ago I was forced to buy anothe keyboard which has been years since i had bought one. The keyboard is a Logitech keyboard that also came with a usb mouse. Previously my debunked keyboard was always connected to the one PS/2 port. Logiteck came with a usb connection. I was running out of good usb ports for some reason on my old desktop so I was hopeing that i could get an adapter that would take that usb into a female PS/2. Just like maagic i found one in my old computer box that i must have bought with that possibility, so i made the connection and the keyboard does not react to it Any clues why the kb won't wprl? By making this connection to work would free up a necessary usb port on my desktop.

 

[boju]

See solution based on ps2 adapters. Usb keyboards these days aren't commonly wired with ps2 inmind like the old days.

[SOLVED] - Will USB to PS/2 adapter work for me

Hi, the motherboard I bought supports only PS/2 keyboard and mouse. DON'T ASK WHY. Will it work if i connect USB keyboard and mouse through the USB to PS/2 adapter?

forums.tomshardware.com

What do you mean running out of good usb ports? Are they damaged or used? You could get a usb hub to use keyboard and mouse with.

 

[Paperdoc]

Your problem may be with the new keyboard Device Driver supplied by Logitcech. In fact that adapter you have should have worked. It turns out that the electrical connections and signalling systems for USB2 and P/2 ports are identical, so the adapter merely needs to connect the pins of the USB Type A connector on the cable end to the right pins of the PS/2 socket. I have done this often and it works. I do it for exactly your reason - I can use PS/2 ports for mouse and keyboard (nothing else will need those) and keep two USB2 ports free.

HOWEVER, in at least one case I discovered that the DRIVER supplied with a new Logitech wheel mouse could NOT find a mouse at a PS/2 port. It appears NOT to be able to do that. I switched to a USB port and that worked. BUT I then decided that driver provided a bunch of enhancements I did not need. So I uninstalled the mouse in Device Manager, re-connected it to my PS/2 ports and booted up. Then I told Windows NOT to load the Logitech driver, but instead to load the default Windows wheel mouse driver. Works just fine, with the features I want and no extras.

You could try this trick with your keyboard (and maybe new mouse).

 

[Novel8]

Your problem may be with the new keyboard Device Driver supplied by Logitcech. In fact that adapter you have should have worked. It turns out that the electrical connections and signalling systems for USB2 and P/2 ports are identical, so the adapter merely needs to connect the pins of the USB Type A connector on the cable end to the right pins of the PS/2 socket. I have done this often and it works. I do it for exactly your reason - I can use PS/2 ports for mouse and keyboard (nothing else will need those) and keep two USB2 ports free.

HOWEVER, in at least one case I discovered that the DRIVER supplied with a new Logitech wheel mouse could NOT find a mouse at a PS/2 port. It appears NOT to be able to do that. I switched to a USB port and that worked. BUT I then decided that driver provided a bunch of enhancements I did not need. So I uninstalled the mouse in Device Manager, re-connected it to my PS/2 ports and booted up. Then I told Windows NOT to load the Logitech driver, but instead to load the default Windows wheel mouse driver. Works just fine, with the features I want and no extras.

You could try this trick with your keyboard (and maybe new mouse).

YOU SEEM TO BE CONCENTRATING ON THE MOUSE CONNECTION...sorry for the caps, I am only interested in the keyboard, but thanks, I will try what u suggested.

 

[Paperdoc]

Yeah, I know your concern is your keyboard. I just thought the change I made for my mouse to be able to use a PS/2 port might also apply to a keyboard from Logitech. But do note that I believe such a change probably will NOT provide any extra enhancements for that keyboard that Logitech enables through using their custom Device Driver.

 

[kerberos_20]

there are two types of usb to ps2, either converter or adapter
adapter will not work on modern usb keyboards, as mentioned above, you do need converter (or usb hub)

 

[Paperdoc]

OK, a PASSIVE adapter is the device I wrote about above. it does NO conversions of anything, and only connects the right pins together.

ACTIVE adapters do some conversions and use a chip for that. One common type is a unit that allows you to plug two PS/2 devices (typically a keyboard and a mouse) into one USB2 port - useful if your computer does NOT have PS/2 ports. This DOES need to convert between systems - it basically create 2 PS/2 ports and converts each to appear to be devices on separate USB2 ports. These often appear as cables connecting sockets for plugs to a central box with the processing components. This would NOT suit OP's needs.

Apparently there now are some USB keyboards (and mice?) that use different signalling systems from the original USB2 ones and cannot be used through a PS/2 port. I can anticipate that a keyboard designed solely for use as a USB3.2 device might do this, but it seems there are other types, too. For this purpose again a certain type of Active Adapter is required to manipulate signals from such a USB device to an PS/2 port.

Apparently the Logitch mouse I wrote about above was NOT some new design, because it DOES work using a simple Passive adapter to connect it to a PS/2 port when I use a simple Windows default wheel mouse driver. I fond it revealing, though, that the device driver supplied with it by Logitech cannot "find" that mouse if it is plugged into a PS/2 port.

 

[Novel8]

Your problem may be with the new keyboard Device Driver supplied by Logitcech. In fact that adapter you have should have worked. It turns out that the electrical connections and signalling systems for USB2 and P/2 ports are identical, so the adapter merely needs to connect the pins of the USB Type A connector on the cable end to the right pins of the PS/2 socket. I have done this often and it works. I do it for exactly your reason - I can use PS/2 ports for mouse and keyboard (nothing else will need those) and keep two USB2 ports free.

HOWEVER, in at least one case I discovered that the DRIVER supplied with a new Logitech wheel mouse could NOT find a mouse at a PS/2 port. It appears NOT to be able to do that. I switched to a USB port and that worked. BUT I then decided that driver provided a bunch of enhancements I did not need. So I uninstalled the mouse in Device Manager, re-connected it to my PS/2 ports and booted up. Then I told Windows NOT to load the Logitech driver, but instead to load the default Windows wheel mouse driver. Works just fine, with the features I want and no extras.

You could try this trick with your keyboard (and maybe new mouse).

Thanks IT DID not work with the keyboard. I di have a usb Hub and guess what,,,,no spares... BTW, I did apologize for the caps and almost did it again as you notice. Either i type too fast and hit the cap button unknownst to me till i see it or its this Logitech keyboard that at times seems to type to fast.

 

[Paperdoc]

I do that a lot - find that the last two lines I typed are all CAPS! and have to re-do.

So my suggestion does not work for your keyboard. I guess you'll have to use a USB2 port on your computer then, or via a Hub.

This idea may NOT apply to you. I have USB2 and USB3.2 Gen1 and Gen2 ports on my system, which was new about 2½ years ago. I have an older USB2 powered Hub and use it for a few older USB2 devices. I deliberately have NOT connected any of those to any new USB3.2 ports on the back panel or the case front, so they are still available for new equipment if and when.... I advise some people to use older USB2 mobo ports so they can keep new ones free for new devices as I do. This MAY be a strategy for you. But here's the "trick" in my case. My mobo does NOT have any USB2 sockets on its rear panel. It DOES have two USB2 headers on the mobo NOT connected to anything. To be able to use them (as above) I bought a simple device that is a metal mounting plate that holds four USB2 female sockets and slips into an unused opening behind a PCIe unused slot. It has two cables to plug into the mobo USB headers. That is how I made those mobo features available on my back panel for USB2 devices like my old Hub, leaving empty all the USB3.2 sockets.