What's the benefit of using an optical mouse on USB rather than PS/2

[Uncertainty]

I came up to this question while i noticed a remark on logitech's site. My mouse is a logitech optical USB but i am running it on PS/2. They say - on their site - that i won't be able to take advantage of the 800 dpi resolution which the USB 'll give 2 my mouse. What's the deal with 800 dpi and how it impacts the mouse performance ?
Also, Will this mouse draw more power when it is USB connected rather than PS/2 connected. I know that the power consumption is nothing 4 the mouse in both cases and i am not worried but i just wanted 2 know this info 4 my knowledge.

[Ossorya]

I too have Logitech USB optical mouse and was using it for a long time on USB but lately I needed to use some HDD tools booted from floppy and had to switch it to PS2 and left it there-I can't honestly say that I notice any difference in everyday use.Maybe it's important(dpi)when you draw/create something,edit graphics and photos with your mouse or pointig targets in games(lol),it's more precise etc.but for clicking links and files it doesn't matter,imho.

[krocodile]

I came up to this question while i noticed a remark on logitech's site. My mouse is a logitech optical USB but i am running it on PS/2. They say - on their site - that i won't be able to take advantage of the 800 dpi resolution which the USB 'll give 2 my mouse. What's the deal with 800 dpi and how it impacts the mouse performance ?
Also, Will tPS/2 connected. I know that the power consumption is nothing 4 the mouse in both cases and i am not worried but i just wanted 2 know this info 4 my knowledgehis mouse draw more power when it is USB connected rather than .

From my understanding, 800 dpi mainly refers to how accurate the mouse is, quoted on some websites as "pinpoint precision". A good example might be, if you are using a CAD program and you are trying to place your cursor over a very specific point. You might notice that at 800 dpi also, it takes less hand movement to take the mouse from point A to B.

Now when you speak of power consumption, are you talking about how much power the mouse uses if it's wireless and how long the battery life will be? Or, are you speaking of how much power it takes from your system as a whole?

[TeKKiE]

Both USB and PS/2 are 5 volt connections. In essence, either port would provide the same power consumption. The above mention of accuracy is true. The USB port obviously has better data rates than PS/2, and therefore can process data received from the device faster. 800dpi doesn't matter when you're pointing and clicking as mentioned above, and really does make a difference when you are designing with CAD, or playing games online where even the ping rate makes a huge difference. It could be a determining factor between killing or getting killed. (Unless you suck like me and even the fastest system on Earth won't help you get any better LOL)

Ossorya - Have you enabled legacy USB support in your system's BIOS? This will allow you to use USB keyboard/mouse in other environments than windows. (For instance, I use Norton Ghost boot disks and cannot use my mouse unless legacy USB is enabled in BIOS.)

[Uncertainty]

Now when you speak of power consumption, are you talking about how much power the mouse uses if it's wireless and how long the battery life will be? Or, are you speaking of how much power it takes from your system as a whole?

I meant the power taken from the system - i never meant any wireless mouses
AND thanks 4 ur input and the inputs of others - they r beneficial. I'll switch 2 usb 2 get the 800 dpi whenever i need 2 learn CAD

[brothergc]

one bennifit is freeing up system resorces by freeing up a IRQ , been using a usb mouse for years

[A7V133]

Since were talking mice here. I got an Explorer 4.0A mouse and 50% of the time when I boot up windows the mouse dosn't work. I have to unplug and replug and it works fine. Also it seem like you have to click it a little slower than my other mice. You can't just tap the button it has to be a more deliberate push if you know what I mean. Any ideas

[Mjölnir]

My first thought is that it could be conflicting with another USB device. Have you tried different USB ports? Does it also do it when you unplug other USB devices?

[tenax]

i have an msi wireless mouse and keyboard..the the dongle has a ps/2 adapter that goes to usb..i am guessing that i'm truly not getting usb transfer rates given it's adaptered version.

also, i found lockup problems using the usb that i don't have with 6 other usb devices..doesn't matter whether i use crappy onboard via usb or my good nec chip based pci adapter.. since i switched to the ps/2 adapter, never a problem.

[urbeg]

i've got a problem with my mouse too!!

ok i have an optical wired mouse, its usb but i plugged it into a ps/2 adapter which then plugs into the ps/2 port on the compter. i'm only realising now that it makes a difference after reading this post. anyway, my problem is that everytime i start up my computer i get an error message saying "ps/2 device connented incorrectly". i assume that it means connected but it says connented??? then i have to press f1 to continue. alough i get that error the mouse works fine, its just annoying having to press f1 everytime you boot the computer. any ideas what it could be? thanks