It boots from the microSD card with no flash memory and hosts new interfaces, including a DB-9 serial connector, integrated 4-port Universal serial Bus (USB) hub, and integrated Ethernet port.

它没有闪存从microsd卡引导，但是有很多新接口，包括一个DB - 9系列的连接器、集成4个端口的Universal Serial Bus (usb)总线、以及集成的Ethernet端口。

youdao