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.aspku.com
首先是Microsoft的回答：
Thankyouforwritingback.
Fromyourreply,IgatherthatyouwouldtoknowifthereisanydifferenceinperformancewhenthemouseispluggedtotheUSBandthePS/2ports.
Letmeassureyouthatinmostcases,therewouldnotbeaperformancedifference.Intheformer,themouseworksasaUSBmouseandinthelatterthemouseisrecognizedasaPS/2mouse.
HoweverwhenthemouseisusedonaLaptop,itisrecommendedthatthemousebepluggedtotheUSBports.Thereasonthatisthat,whenthemouseusesthePS/2portthentheremightbeconflictswithinternalpointingdevicesontheLaptop;astheyalsousethePS/2busforcommunication.
Ihopethisinformationhelps.Pleasefeelfreetowritebackincaseyouneedadditionalclarificationsonthisissue.Itwillbemypleasuretobeofassistance.
BestRegards,
Abraham
MicrosoftProductSupportServices
然后我拿到了Logitech的回复
ThankyouforusingLogitech'sElectronicTechnicalSupport.MynameisRohit.Thefollowinginformationaddressesyouroriginalquestion.Youmaywishtoprintthisoutand/orsavethisonyourcomputer.
WewouldtoinformyouthatifwhenyoupluginyourmouseintheUSBporttheWindowsOSwillautomaticallydetectthemouseandyoucanstartusingit.IfyoupluginyourmouseinaPS2porttheWindowsOSwillnotdetectthemouse.FortheWindowsOStodetectyourmouseyouwillhavetorestartyourcomputer.
TheperformanceofthemousewillbethesamewhetheryouuseitonaPS2portorUSBport.
Ifyouhaveaddition altechnicalquestionsregardingthisissue,pleasereplytothisemail.
Ifyouhavequestionsregardinganotherissuewithyourproduct,orquestionsregardinganotherproduct,pleasevisitourwebsiteatwww.logitech.comandsubmityourquestion.
ThankyouforyourinterestinLogitech.
Regards,
Rohit
LogitechCustomerSupport
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，LogitechUSB的,实际转身范围只有MicrosoftUSB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