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正品清华紫光免切换数字小键盘，即插即用！
Genuine unis Free toggle numeric keypad， plug and play!
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系统支持XP VISTA WIN7 WIN8 MC苹果系统
高速传输的USB接口，即插即用，支持热插拔，安装简单
笔记本键盘正常输入中英文，数字键盘专输数字，完全可以同时使用，NUMLOCK键无需来回切换.很多数字键盘受成本所限，是不具备这个功能的，必须来回切换使用（因为笔记本上的字母键是数字、字母二用设计，受NUMLOCK键控制，需要来回切换），即：每次输入数字后再输入文字，必须按一下NUMLOCK键切换，否则有些字母打出来的就是数字。反过来输入文字后再输入数字也是一样。比如您输入：“妈妈的生日是6月30日”，文字和数字之间要反复按NUMLOCK键来回切换4-5次，忘了切换，打错了还得删掉重新来，手忙脚乱绝对窝心不顺手！
经典的清华紫光 K019 免切换型号，要买一定要买免切换，PC、苹果MAC机 等等都可以即插即用、全兼容免切换（目前紫光系列数字键盘仅有K019这一款完全支持免切换）
The system supports XP VISTA WIN7 WIN8 MC Apple system
High-speed transmission USB interface， plug and play， hot-swappable， easy to install
Laptop keyboard normal input in English， numeric keypad designed output figures， can be used simultaneously， NUMLOCK key without having to switch back and forth. Many numeric keypad by cost constraints， do not have this feature， you must switch back and forth (because the letter keys on the notebook. numbers， letters with two designs by NUMLOCK key control， need to switch back and forth)， namely: each digital input and then enter text， you must press the NUMLOCK key switch， otherwise some of the letters is to break out figures. In turn， enter the text and then enter the number as well. For example， you type: "Mom's birthday is June 30，" between the text and numbers to repeatedly press the NUMLOCK key to switch back and forth 4-5 times， forgot to switch， wrong again have to delete， the rush is definitely not sweet smoothly!
Classic unis K019 Free switch models， looking to buy a certain switch Free， PC， Apple MAC machines， etc. can be plug and play， fully compatible Free Switching (currently purple Series Digital Keyboard K019 This is just a completely Free support switching)
