Habey EMB-4500 - Manual (Page 31)

the system, including RAM, keyboard, hard disk driver etc. to check if all the components are in
normal situation and work well.
PS/2
A keyboard & mouse connective interface specification developed by IBM.PS/2 is a DIN
interface with only 6PIN; it also can connect other devices, like modem
USB
It is the Universal Serial Bus for short. A hardware interface adapts to low speed peripherals,
and is always used to connect keyboard, mouse etc. One PC can connect maximum 127
USB devices, providing 12Mbit/s transmit bandwidth USB supports hot swap and multi- data
stream, namely, you can plug USB devices while system is running, system can auto-detect
and makes it work on.
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