之后-销售服务
呼叫中心的在线技术支持, 免费备件, 退换货, 维修, 其他
Screen
21.5 inch FULL HD IPS screen
CPU
Rockchip RK3566 quad core processor, clocked 2.0G
3G/4G
Support external 3G/4G USB dongle
SD
1*SD card slots (max support 32GB)
Mini USB
1*USB OTG (through it to debug the machine, brush the system program)
RJ45
1*RJ45 network interface