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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Is this keyboard latency test accurate for both PS/2 and USB keyboards? How can I test the latencies of keyboards?

I plugged in my old PS/2 keyboard while getting my USB keyboard clean and dry, and I think I feel it has lower latency, and I want to test the latencies of the keyboards now. According to the test at ...
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Does connecting a USB keyboard to a PS2 port with a USB to PS2 converter reduce its latency? [duplicate]

I plugged my old PS2 keyboard while getting my USB keyboard clean and dry, and I think I feel it has lower latency... Apparently PS2 is just better than USB, but I'm used to the physical aspect of the ...
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can a faulty ps2 mouse port cause my left click not register?

I'm using a PS/2 mouse and sometimes the mouse just stops working. So I would unplug and plug it in again and it would start working. After searching for a solution for my mouse click that stopped ...
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Can I get raw access to the PS/2 port in Linux?

Context: I have an exotic keyboard with a screen on it. I believe that the host machine draws on the screen by sending commands down a PS/2 connection (I'm still reverse engineering the protocol). My ...
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PS/2 2in1 mouse/keyboard connector is not working

I have a motherboard that has a PS/2 2in1 connector (green|purple). If I plug a keyboard into it, it works in BIOS, but doesn't work in Windows. I tried a couple of videos that messed a little with ...
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Keyboard not working after BIOS. What should I do? (Клавиатура не работает после биоса. Что мне делать?)

After installing 2 programs and rebooting in Windows, my keyboard and mouse do not work. I tried many settings in the BIOS (Version Ami 2.5x-2.6x). I searched for a long time on the Internet - did not ...
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How do I get my Cordless Wheelmouse (MRF-2000) to work with Windows 10?

The mouse came in two parts, one sender and one receiver. (I believe the data is radio transmitted) The receiver is plugged in with an PS/2 to USB adapter to my computer, and the other part is the ...
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Will PS/2 keyboard work if use purple adapter but BIOS has no USB Legacy mode?

As I get it a purple adapter is for a keyboard (PS/2 to USB). Does it make sense to buy one if I have no USB Legacy mode in UEFI settings?
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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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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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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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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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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'...
overdriven's user avatar
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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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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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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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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 ...
AAron J Worman's user avatar
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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. ...
Hashim Aziz's user avatar
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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 ...
evilpascal's user avatar
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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 ...
Trashtalk's user avatar
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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 ...
Blake King's user avatar
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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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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 ...
thleo's user avatar
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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 ...
KNejad's user avatar
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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 ...
Hashirama Senju's user avatar
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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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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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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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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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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 ...
yoyo_fun's user avatar
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45 votes
5 answers
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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?
Wes's user avatar
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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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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. ...
RAKK's user avatar
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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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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,...
ampat's user avatar
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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. ...
Joe_Vj _95's user avatar
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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 ...
Mike's user avatar
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10 votes
3 answers
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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?
unknownSPY's user avatar
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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 ...
S.Nishizaki's user avatar
11 votes
5 answers
7k 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? ...
Andrew's user avatar
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2 votes
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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 ...
Keaton Burleson's user avatar
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1 answer
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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 ...
Ray's user avatar
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8 votes
3 answers
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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 ...
Ray's user avatar
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1 vote
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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, ...
John Knoeller's user avatar
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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 ...
abbasi's user avatar
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6 votes
2 answers
25k 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 ...
dShringi's user avatar
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