鼠标使用USB和PS2接口的比较

　　现在我们的问题是
　　鼠标使用usb接口和ps/2接口是否有不同？

　　这个问题 我有我的答案
　　但是为了严谨起见 也为了正确引导国内cser的技术走向
　　microsoft技术总部和logitech技术总部咨询答复如下：//本文转自www.jb51.net

　　首先是microsoft的回答：
　　thank you for writing back.

　　from your reply, i gather that you would to know if there is any difference in performance when the mouse is plugged to the usb and the ps/2 ports.

　　let me assure you that in most cases, there would not be a performance difference. in the former, the mouse works as a usb mouse and in the latter the mouse is recognized as a ps/2 mouse.

　　however when the mouse is used on a laptop, it is recommended that the mouse be plugged to the usb ports. the reason that is that, when the mouse uses the ps/2 port then there might be conflicts with internal pointing devices on the laptop; as they also use the ps/2 bus for communication.

　　i hope this information helps. please feel free to write back in case you need additional clarifications on this issue. it will be my pleasure to be of assistance.

best regards,

　　abraham
　　microsoft product support services

　　然后我拿到了logitech的回复

　　thank you for using logitech's electronic technical support. my name is rohit. the following information addresses your original question. you may wish to print this out and/or save this on your computer.

　　we would to inform you that if when you plug in your mouse in the usb port the windows os will automatically detect the mouse and you can start using it. if you plug in your mouse in a ps2 port the windows os will not detect the mouse. for the windows os to detect your mouse you will have to restart your computer.
　　the performance of the mouse will be the same whether you use it on a ps2 port or usb port.

　　if you have additional technical questions regarding this issue, please reply to this email.

　　if you have questions regarding another issue with your product, or questions regarding another product, please visit our web site at www.logitech.com and submit your question.

　　thank you for your interest in logitech.

　　regards,
　　rohit
　　logitech customer support

　　使用usb和ps/2接口来操作鼠标，所实现的效果是基本一致的，如果在usb和ps2接口都拥有的前提下非要二选一，那么 任何时刻我们都应该选择稳定高效的usb.而和logi或者micro的品牌或者型号无关。

　　“关于ps2和usb2.0在cs中的表现深入研究”文章中任举几处无法接受的硬伤

　　1.使用同样的sensitivity同样的cfg，logitech usb的,实际转身范围只有microsoft usb的三分之一！！

　　2.问题应该不在mx光电引擎上，也许就出在microsoft也曾经提到过的usb2.0的最大传输瓶径问题上。

　　3.做“腕动”的时候，移动范围比较小速度比较慢，扫描到的数据量小，125hz/m的接口传输速度足够把这些数据在短时间内传输出去，所以移动速度正常且和microsoft相近，而在做“臂动”时，扫描范围增大，移动速度比较快，扫描到的数据量增多。

　　4.鼠标速度感觉很慢不易转身的时候最大传输速率相对较低。

　　5.传输速率：ps2maxrate