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。

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While many MFP devices still use the parallel port, there is a shift to Universal Serial Bus (USB) for the high-speed connection of peripheral devices.

也即当采用并行端口的众多多功能外设器件彼此相连时，在通用串行总线(usb)上可以实现他们的高速数据交换。

youdao

Universal serial Bus (USB) is similar to a serial port.

通用串行总线(usb)与串行口相似。

youdao

Universal serial Bus (USB) is similar to a serial port.

通用串行总线(usb)与串行口相似。

youdao