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Forums => Computers - Technology => Topic started by: JonnyJobin on September 17, 2019, 12:11:47 am

Title: Is the PS/2 keyboard/mouse different from USB?
Post by: JonnyJobin on September 17, 2019, 12:11:47 am
I've had a hackintosh for about 10 years now and for some reason the USB keyboard has been giving me trouble. I thought it was the MB, so I installed Windows 7 for the same MB that was running macOS. The USB mouse is giving me trouble (cutting in and out).
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Someone suggested to use the other USB set (the board has 2 USB banks), and also suggested that I try the PS/2 ports for the mouse/keyboard.

Q. Does the PS/2 ports work on a different channel than the USB does so that if my USB doesn't work under macOS, then maybe the PS/2 will?

Is there any USB 3/3.1 PCIe cards that work with macOS?
Title: Re: Is the PS/2 keyboard/mouse different from USB?
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Title: Re: Is the PS/2 keyboard/mouse different from USB?
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Title: Re: Is the PS/2 keyboard/mouse different from USB?
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Title: Re: Is the PS/2 keyboard/mouse different from USB?
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Title: Re: Is the PS/2 keyboard/mouse different from USB?
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Title: Re: Is the PS/2 keyboard/mouse different from USB?
Post by: Emma97 on March 08, 2022, 08:25:14 pm
PS/2 ports may be preferred in a corporate setting for security concerns since they allow USB ports to be completely deactivated, prohibiting the attachment of any USB portable drives or malicious USB devices. [9]
The PS/2 interface does not impose any limitations on key rollover.
Due to driver difficulties or a lack of compatibility, some USB keyboards may be unable to access the BIOS on specific motherboards. BIOS is nearly universally compatible with the PS/2 interface.
When KVM switching with non-Windows computers, PS/2 ports generate less issues.

USB:

USBs often have reduced latency.

On a keyboard, they have at most a 6-key rollover, however there are workarounds depending on the operating system and BIOS.

USB is far superior to PS/2 for hotplugging (you must turn off a PS/2 PC if there is no PS/2 device in the port during PC activation, and it is still not suggested to "hot-swap" a device in PS/2).

PS/2s were not meant to be repeatedly disconnected, hence they are not particularly durable for that purpose.

TL;DR: The USB is superior in most use scenarios, which explains its widespread acceptance.
Title: Re: Is the PS/2 keyboard/mouse different from USB?
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Title: Re: Is the PS/2 keyboard/mouse different from USB?
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