小米手机设置中的语言和输入法里面的指针速度那个是OTG功能，就是用这个手机连接鼠标以后指的是鼠标移动速度，连鼠标以后会有一个和电脑一样的小箭头。
OTG连接手机方法如下:
1.先买个适合自己手机的OTG头
/iknow-pic.cdn.bcebos.com/e1fe9925bc315c6008110a0186b1cb1348547753"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/e1fe9925bc315c6008110a0186b1cb1348547753?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/e1fe9925bc315c6008110a0186b1cb1348547753"/>
2.OTG在手机上
/iknow-pic.cdn.bcebos.com/faf2b2119313b07ecd5131e607d7912396dd8c6b"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/faf2b2119313b07ecd5131e607d7912396dd8c6b?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/faf2b2119313b07ecd5131e607d7912396dd8c6b"/>
3.插上鼠标就可以使用了
/iknow-pic.cdn.bcebos.com/a6efce1b9d16fdfa807fa600bf8f8c5495ee7bc8"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/a6efce1b9d16fdfa807fa600bf8f8c5495ee7bc8?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/a6efce1b9d16fdfa807fa600bf8f8c5495ee7bc8"/>
4.使用效果如图上有个箭头
/iknow-pic.cdn.bcebos.com/caef76094b36acaf0d2beb1277d98d1000e99c10"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/caef76094b36acaf0d2beb1277d98d1000e99c10?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/caef76094b36acaf0d2beb1277d98d1000e99c10"/>