无线 ...................................................................................................19 音频 .........................................................................................................19 存储时 .................................................................................................... 20 介质卡读取器 ......................................................................................... 20 键盘 ........................................................................................................ 20 摄像头 ..................................................................................................... 21 触摸板 ..................................................................................................... 21 电源适配器 ..............................................................................................21 电池 ........................................................................................................ 22 显示器 .................................................................................................... 23 视频 ........................................................................................................ 23 计算机环境 .............................................................................................23 键盘快捷方式 ...............................................................25 获取帮助和联系 Dell.....................................................27 自助资源 .................................................................................................27 联系 Dell ..................................................................................................28 4