External expansion interfaces

# 一、Display of external expansion interfaces
<video width="100%" height="413" controls="controls" src="https://cdn.1boapp.com/elike/doc/video/en/liveBroadcastMachine.mp4?t=1716280707" title="外接拓展接口展示"></video>

# 二、API details
<div>
 <ul>
 <li style="width: 40%;float: left;height: 100px;font-size: 18px;">
 HDMI IN*2 <image src="https://cdn.1boapp.com/elike/doc/HDMI.png"></image>
 </li>
 <li style="width: 40%;float: left;height: 100px;font-size: 18px;">
 HDMI OUT*3 <image src="https://cdn.1boapp.com/elike/doc/HDMI.png"></image>
 </li>
 <li style="width: 40%;float: left;height: 100px;font-size: 18px;">
 WAN/LAN <image src="https://cdn.1boapp.com/elike/doc/WAN.png"></image>
 </li>
 
 <li style="width: 40%;float: left;height: 100px;font-size: 18px;">
 USB 3.0*3 <image src="https://cdn.1boapp.com/elike/doc/USB.png"></image>
 </li>
 <li style="width: 40%;float: left;height: 100px;font-size: 18px;">
 USB 2.0*2 <image src="https://cdn.1boapp.com/elike/doc/USB.png"></image>
 </li>
 <li style="width: 40%;float: left;height: 100px;font-size: 18px;">
 TYPE-C <image src="https://cdn.1boapp.com/elike/doc/type-c.png"></image>
 </li>
 <li style="width: 40%;float: left;height: 100px;font-size: 18px;">
 DC 12V <image src="https://cdn.1boapp.com/elike/doc/DC.png"></image>
 </li>
 <li style="width: 40%;float: left;height: 100px;font-size: 18px;">
 earphone interface <image src="https://cdn.1boapp.com/elike/doc/headset.png"></image>
 </li>
 
 </ul>
</div>