Questions tagged [ps2]

PS/2 is an older interface for connecting mice and keyboards to a PC. The connector is a 6-pin Mini-DIN and only fits one way.

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How to get the Synaptics PS/2 driver to work properly over a USB connection

I have a physical disability that makes it impossible to use a computer normally, and the only thing that works for me is the Synaptics Touchstyk mouse, which is similar to trackpoint. It only comes ...
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1answer
30 views

How to read and send data to PS/2 port? [closed]

I have a device connected via PS/2 on Windows PC, acting like a keyboard. I would like to use a "terminal" to monitor the data coming from that port, and even send data to it. I expected ...
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“xda” and other stuff keep being typed on my internal PS/2 keyboard

My internal PS/2 laptop keyboard keeps typing stuff i don't know why. Here's a sample: /*+-~~xda<`/*+-~~xda</*xd/*+-~~/*+-~~xda/*+-~~xda<`/*+-~~xda<`<`````///////////////////////////////...
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What is the maximum number of distinct keys a PS/2 or a USB keyboard can have that Windows 10 would understand as unique keys?

I've been looking for information on how to expand a keyboard to bind additional keys to various commands, without resorting to key combinations (like Alt+F12). From what I've found, it seems like in ...
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Does a PS/2 to USB adaptor that's meant for a mouse work with a keyboard?

I'm looking for a PS/2 to USB adapter for an older keyboard of mine. However, the only ones I can find are meant for a mouse instead of a keyboard. Will they work with my keyboard?
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What is the logic behind the scale command in the PS/2 mouse interface?

I was reading about PS/2 mouse interface and it says the host (computer) can send the devise (mouse) a scale by 2 command (code 0xE7) that will cause the device to scale the movement it reports to the ...
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98 views

Old PS/2 keyboard repeating letters

I have an old PS/2 keyboard that I'm connecting to my Win10 computer via a PS/2-USB adapter. Problem is that it randomly decides to start repeating a given letter as though it's pressed. The only way ...
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717 views

Keyboard not detected in BIOS but works in Windows

Whenever I re-plug my PC it turns on and off immediately and as a result next time I turn it on I see this message Problem is that pressing F1 doesn't do anything. Actually pressing any button doesn'...
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How to disable the “function lock” key on a cheap keyboard

I recently inherited a cheap no-name keyboard and it feels a lot better to type on than the cheap Trust keyboard I previously had. However, there's a huge problem with it that I don't like: it has a ...
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3answers
436 views

Will a USB to PS/2 adapter come with the benefits of a PS/2 to PS/2 connection?

Will the benefits of ultra low latency "forces the cpu to deal with the ps/2 input" exist with a USB to PS/2 adapter or will the adapter be a limiting factor?
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410 views

Can you install PS/2 ports in a PC that didn't come with any?

I have a PS/2 keyboard and PS/2 mouse that work quite well. The Dell OptiPlex 780 is an all around excellent PC, but two things it lacks are a) floppy drive by default and b) PS/2 ports. We have an ...
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P300STD barcode scanner not printing with ps2 to usb adaptor

my barcode scanner is not recognized when using ps2 to usb adapter , i had to use an adaptater as my pc hasn't any ps2 port it makes a bip sound but nothing is displayed in Notepad i am using windows ...
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308 views

ps2 keyboard to usb laptop with win 10

OK, here is my problem . I wanted to use my old "Microsoft natural multimedia keyboard 1.0A (PS/2 style)" with my laptop (Toshiba Satellite c75d-b7304) that runs "win 10 home", but my laptop doesn't ...
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3k views

Why don't PS/2 ports need drivers?

I recently came across the following answer on SU, which states: If your motherboard USB ports don't work during install, you will have to use PS2 keyboard and Tab key during install of windows. ...
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1answer
190 views

USB keyboard and USB-to-PS/2 adapter scancode

I have configuration like this: USB keyboard ---> USB-to-PS/2 adapter ---> PS/2 port.Below is the image of the adapter. USB-to-PS/2 adapter My question is which scancode will be produced at the end ...
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651 views

Working with a Passive PS/2 to USB converter

For some background see this question. I've recently gotten my hand on a logitech Y-ST39 keyboard which uses the PS/2 protocel. I've bought an converter for it without knowing that it is a passive ...
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829 views

Would a PS/2 Port be damaged by hotswapping if a USB to Ps2 convertor is used?

I want to use a USB keyboard and mouse with an old server. Not very old but the USB ports are taken up. I plan on using an active USB to PS2 convertor (Tripp Lite brand) But I need to be able to ...
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(GIGABYTE BIOS) PS/2 keyboard isn't working, but is seen in devmgmt

Backstory: I have a new PC build, and it's my first time using a GIGABYTE motherboard; model: Z270XP-SLI. It's on the latest F9d BIOS revision. When I use my Rosewill RK9000 PS/2 keyboard with it, ...
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9k views

Disabled ALL USB ports. How do I reenable without PS/2 port on Windows 10?

I'm running a Windows 10 Edition and the motherboard's ASUS Z270 motherboard All USB ports have been disabled via device manaager. I've bought a PS/2 O/P USB I/P adapter, plugged in two USB mice to ...
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1answer
11k views

Windows 10 doesn't see PS/2 keyboard [duplicate]

The PS/2 keyboard is available in the BIOS. But after the Windows 10 system is booted, keyboard is not detected.
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Do built in keyboards use polling or interrupts?

I was reading this question which says that USB keyboards use polling to see if keys are being pressed whereas PS/2 keyboards use interrupts. I was wondering which method built in keyboards on a ...
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1answer
619 views

Is the PS/2 connector really safer than USB?

Is it possible to exploit the PS/2 connector like the USB (for example with something like a Rubber Ducky)? In term of security reasons, theoretically, it should be possible to virtualize the PS/2 ...
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646 views

Need PS/2 adapter in case of USB driver conflict

I had an issue when installing Windows 7, when it came time to install the USB 3.0 driver that came with the motherboard. Next thing I know when I reboot, both mouse and keyboard are no longer working ...
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1answer
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Why does nobody makes a new peripherical connector based on ending interrupts signals to processors such as PS/2? [closed]

Most specialists agree that for a mouse and a keyboard the most efficient way to communicate with the processor is based on interrupts (the way it is done in PS/2 ports) rather than polling (the way ...
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1answer
2k views

Is a Mouse USB to PS/2 adapter identical internally with a a keyboard USB to PS/2 adapter?

I would like to buy a keyboard USB to PS/2 adapter. However on many websites I see Mouse USB to PS/2 listed separately than Keyboard USB to PS/2 adapters/ I wonder if they are internally identical or ...
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1answer
802 views

How to diagnose an unresponsive Ubuntu 16.04 GUI?

Virtually a newbie to linux/ubuntu I recently installed Ubuntu 16.04 AMD64 build on a hard-drive first installing it on a USB stick. The system is now a dualboot with Win 7 on one drive, Ubuntu 16.04 ...
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2answers
21k views

Can any USB mouse or keyboard be connected to the PS/2 connector of a motherboard via USB-PS/2 adapter?

IS there a necessity for the mouse to know a different protocol or a different pinout to be able to be connected to a PS/2 port ? Many vendors provide USB - PS/2 adapter, but some don't. From what I ...
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5answers
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How many port adapters, and which ones can be stacked up and actually work?

Someone posted this pic on twitter today: That won't work, right? Why, exactly? And, specifically, at which point the stack of adapters stops working?
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1answer
192 views

My USB mouses aren't working on my windows XP. Do I need to use a PS/2 interface mouse?

So i found this old windows XP, and i plugged in the mouse got it started up, but the cursor on the screen wouldn't move. i tried many mouses and every port on the tower. One mouse glowed red, meaning ...
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1answer
55 views

Keyboards plugged to one computer have different failing rows of keys, but work perfectly fine on any other computer

I have a PS2 and an USB keyboard. Recently, a column of keys on my PS2 keyboard failed, so I swapped it for an USB keyboard, but that one turned out to have another different failing column of keys. ...
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What is the key combination for upgrading backup firmware on gigabyte z170-hd3?

Recently switched to gigabyte z170-hd3. some Gigabyte cards have a dual firmware feature, so if the main uefi is flashed incorrectly, it will boot from the backup one. I upgraded the main firmware ...
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1answer
1k views

Is USB keyboard faster than PS/2?

I recently joined a CNC manufacturing company and they have given me a project to work on. So the issue is the MDI keypad used in their CNC machine is of PS/2 interface and they feel that it is slower,...
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271 views

PS2 keyboard not working on a Windows and Ubuntu dual boot system

I have a Windows and Ubuntu dual boot system. From yesterday my keyboard is not working in either of the OS. But it works fine while selecting the operating system or installing an operating system. ...
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1answer
113 views

How to select grub entry via PS2 port?

We want to output the grub entry to serial port and select the grub entry on another machine via serial port. We have two machines. For the machine with built-in serial port, we followed the ...
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146k views

Do PS2 Keyboards work on Windows 10

I was just told that PS2 Keyboards aren't compatible with windows 10. Is this true. I was under the impression that they should work fine?
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390 views

PS/2 Mouse not recognized at Windows XP startup

I have a PS/2 Logitech optical mouse connected through a KVM to a system running Windows XP. When the system starts up the mouse will not respond (does not appear to be getting power, optical light ...
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5answers
6k views

What is the end of this cable?

In the below image (from here), the "left" end (which I have labeled "A") is clearly two PS/2 ports. What is the "right" end (which I have labeled "B")? Does it connect directly to a motherboard? ...
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1answer
2k views

PS/2 Mouse with PS/2 to USB adaptor not working

I dug out an old IBM clone mouse with a PS/2 interface that I need to use on a modern machine. I have a PS/2 to USB adaptor, but it doesn't appear to work. It shows up in Device Manager as a HID ...
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1answer
296 views

Is it true that connecting PS/2 mouse to PS/2 keyboard socket damaged old IBM PCs? [closed]

Several years ago, my neighbor, who was once working at IBM in the "earlier" times (he's above 60 now), told me a story about a customer who reported that the motherboard of one of these old IBM PCs ...
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2answers
12k views

Can I use my green (mouse) USB-to-PS/2 adapter for keyboards?

I have a USB keyboard which I want to connect over PS/2 to my computer. I only have a green USB-to-PS/2 adapter which has the symbol of a mouse on it. Can I use it for the USB keyboard anyways? My ...
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1answer
1k views

How do I get an existing Windows 8 installation to recognize a ps/2 keyboard?

How do I get an existing Windows 8 installation to recognize a PS/2 keyboard? The keyboard works when I'm in the bios, but once Windows starts, the keyboard stops working. The NumLock light is on, ...
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130 views

ps/2 port of the case doesn't work properly

I'm going to install Win XP on my computer (I had win 7 but had some problem with installing the HP printer on it and so I decide to install XP because that printer seems to be installed properly on ...
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2answers
24k views

Caps lock key behavior on PS/2 keyboard is reversed

I'm on a Windows 7 desktop with an external ps2 keyboard and its Caps lock key is behaving in opposite manner, like when I turn on the caps lock and the caps lock key light is lit its typing in small ...
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3answers
18k views

PS/2 keyboard works in BIOS but no longer in Windows 7

This keyboard has been working fine yesterday. Today I start the computer and it stops working somewhere during the Windows logo animation (I keep toggling the Fn key to check). It doesn't react to ...
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1answer
2k views

In what way does non-“full n-key rollover” hinder fast typists? [closed]

Wikipedia claims (although the latter claim does not cite a source) that: High-end keyboards that provide full n-key rollover typically do so via a PS/2 interface as the USB mode most often used by ...
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235 views

Video Card doesn't work without PS/2 Keyboard plugged into PS/2 Mouse port

To make a very long story short, we had a computer in with an odd problem: While the computer otherwise booted fine (Windows start-up sound played), The PCIe-16 video card would not display an image ...
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1answer
2k views

can't access my bios with my usb keyboard no ps/2

my USB keyboard doesn't seem to be recognized at post. I have no ps/2 port. no port on my motherboard. Can't install my windows 7 cause I think is on gpt or else. I really need to get access to my ...
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1answer
324 views

Windows not recognizing mouse or keyboard

I purchased myself a Wild Dog Performance from System76 for Christmas and I am loving it; I've been forced to use Windows at work and having a machine that runs Ubuntu perfectly is a welcome relief ...
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3answers
15k views

How to Determine if USB mouse supports PS/2?

Without having the mouse in hand, is there any way if I can determine if a USB mouse (ie: http://dx.com/p/usb-2-0-wired-red-laser-3200-2400-1600-800dpi-gaming-mouse-black-225631#tabProInfo) supports ...
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1answer
2k views

Transmission rate of PS/2

USB 2.0 full speed - 12 Mbps USB 2.0 high speed - 480 Mbps But what are the rates for PS/2?