PS/2 Mouse with PS/2 to Serial Connector

Nero Version 9
August 1, 2011 at 19:03:44
Specs: Various, PIII/64 MB RAM
Recently I bought a PS/2 to serial connector for my PS/2 mouse. On the back of this Microsoft mouse, it says, "Serial and PS/2 Compatible." The mouse works fine when plugged into the PS/2 port. When it is plugged into the connector, which is plugged into the serial port, it does not work.

I'm pretty sure that the connector is working and that I'm just having trouble getting my mouse to be recognized. When I plugged my keyboard into it, the num lock, caps lock, etc. lights lit up, indicating that the connector's working. The ebay seller had a feedback rating of 100% and said that the product had been tested.

The serial port is not disabled in the BIOS. It is set to auto, meaning that the configuration of the port is decided by the operating system. I booted into Damn Small Linux to test it, but the mouse still didn't work. In device manager, I didn't see anything suspicious about the serial port (COM1). My main operating system is Microsoft Windows NT 5.0 (2000), but I also use Microsoft Windows Disk Operating System 7.10, Microsoft Windows 3.1, and occasionally Linux.

Any ideas how I can get this to work?


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#1
August 1, 2011 at 20:14:12
Those adapters only work with combination mice. That seems to be what you have since it says it's both serial and PS/2 compatible but. . .

Manually set the port to com1, irq4, just in case it's having a problem with the auto setting. Dos and 3.1 aren't PnP OS's but I'm sure 2000 is. I don't know about linux.

For dos and 3.1 you've got a mouse driver loading in autoexec.bat, right? Most of the time you can watch the screen as autoexec loads and see if it finds the mouse.


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#2
August 1, 2011 at 20:28:27
The simple gender adapters - they have no circuitry inside them - only work with a "combo" mouse - a mouse that has been wired up for and is intended to be used with both types of ports.
It will NOT work with a PS/2 only mouse, or with a Serial only mouse.

If you DO have a "combo" mouse, the internal connections of PS/2 to serial gender adapters varies - they are NOT universal.
One that works with one brand or model of mouse won't necessarily work with another brand or model. There are at least three ways they can be connected internally if not more.

I have two identical OLD Microsoft "combo" PS/2 /serial mice (it says, "Serial and PS/2 Compatible." on therm ) that only work with one type of gender adapter (two of them that look different) in a serial port, and I have other "combo" PS/2 /serial mice mice that work with other adapters but not with the ones that work with the Microsoft mice.

The gender adapters can be serial male to PS/2 male, or serial female to PS/2 female.

I have two or more even older Microsoft "combo" mice - serial (female, standard) connector on the cord - that I have never found a gender adapter that works with them in a PS/2 port..
........

"When I plugged my keyboard into it, the num lock, caps lock, etc. lights lit up, indicating that the connector's working. "

HUH ?
When the gender adapter was plugged into the serial port, you plugged a PS/2 connector for a keyboard into it ?
I have never come across a gender adapter that allows you to use a PS/2 keyboard with a serial port - the keyboard would have to be a "combo" keyboard - if not all the keyboard keys work your reasoning is invalid - that only proves the serial port has power, which it probably always has while the computer is running, whether it is disabled in the bios or not.
.....

The IRQ and I/O port the serial port needs for the mouse must be available in Windows or Dos - e.g. a dial-up modem often uses those that are nornally used for legacy Com 2 in older operating systems.


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#3
August 1, 2011 at 23:25:21
Could be you are trying too many steps in one go.

Can you locate (borrow or ebay/computing vintage) a serial mouse and use it to prove the serial port is working and configured correctly such that the mouse works properly.

Generally these mice came with a floppy disc containing the installation program, driver and configuration program etc.

Please advise back on progress.

Good Luck - Keep us posted.


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Related Solutions

#4
August 3, 2011 at 11:21:57
If you happen to have the same old Microsoft mouse model as I do, there are part numbers on the two gender adapters that work with it.
They MAY work with any Microsoft "combo" Serial and PS/2 model that has the PS/2 male connector on the cord.

The mice
Intellimouse Serial and PS/2 Compatible.
P/N X05-51688 Product ID 63618-577
(PS/2 male on the cord)

gender adapters - PS/2 female to serial 9 pin female

Grey, square sides on the serial end.
Microsoft
68666
Really old. I suspect that's the one they originally came with.

Green, rounded sides on the serial end.
no brand name
501102-1002
HC SH
Not as old.

Note that I've found not all mboards recognize the mouse when a gender adapter is used, but most do. Try it with more than one mboard model.


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#5
August 3, 2011 at 19:24:43
The adapter I have is a PS/2 female to serial female. I tried manually setting the serial port to COM1 IRQ4 in the BIOS to no avail. When I boot DOS and autoexec.bat loads, I see the following:

CuteMouse v1.9.1 [DOS]
Installed at PS/2 port

So I guess it's detecting my laptop's trackpad, but not the external mouse. My mouse's product number is XO3-69944. I tested it with a computer that had a different motherboard and it's still the same story.

"HUH ?
When the gender adapter was plugged into the serial port, you plugged a PS/2 connector for a keyboard into it ?
I have never come across a gender adapter that allows you to use a PS/2 keyboard with a serial port - the keyboard would have to be a "combo" keyboard - if not all the keyboard keys work your reasoning is invalid - that only proves the serial port has power, which it probably always has while the computer is running, whether it is disabled in the bios or not."

Right. I wasn't expecting the keyboard to work when I did that; I was just seeing if the serial port was even working at all. The summary of your post seems to be that some brands and models of PS/2 to serial adapters and of serial compatible PS/2 mice don't go well together. A serial mouse from ebay is on the way right now.

My goal is to use a mouse that is plugged into a serial port. The easiest way to achieve that goal is to use said mouse as my main mouse and forget about the adapter and that can of worms, assuming that the problem is not a faulty serial port.


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#6
August 3, 2011 at 19:41:45
I've never come across a serial port (the circuitry for it) that doesn't work, on an otherwise working mboard, over 23 years, at least not on a desktop mboard.
There was always some other reason for the mouse not working when it didn't work.

I have fiddled with very few laptops, but I know damaged laptop mboards are relatively common.


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#7
August 6, 2011 at 18:40:46
The working serial mouse has arrived and it thankfully works, so this problem can be marked as solved. Thank you all for the help. Moral of the story: PS/2 to serial adapters aren't all they're cracked up to be.

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#8
August 7, 2011 at 06:17:35
Thanks for the Thank you.

By the way, gender adapters for USB / PS/2 "combo" mice and keyboards ARE universal. They can be PS/2 female to USB male, or USB female to PS/2 male.
However, the gender adapter for a "combo" mouse , often green, will usually not work with a "combo" keyboard, and the gender adapter for a "combo" keyboard , often purple, will usually not work with a "combo"mouse, because the connections aren't there within the gender adapter.


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