SiFive HiFive Unmatched, Руководство по началу работы

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3.4 Checking the Fan Connection
The HiFive Unmatched board comes packaged with the CPU fan installed. Ensure that the CPU
fan cables are firmly connected to the CPU Fan Header (
21 in Figure 1) before turning ON the
board.
3.5 Powering the Board
Then, power the ATX power supply. The power supply might have a switch that needs to be
flipped on. After setting up the power supply, follow the steps below to power the board ON and
OFF.
3.5.1 Turn ON Power to Board
If the board is not connected to a PC case via the front panel header, power is switched on by
an on-board pushbutton. To turn on the board, press the power pushbutton (
24 in Figure 1)
briefly. The on-board power supply will then turn on. Power LEDs will illuminate indicating that
the ATX power supply is turned ON and power is being regulated from the on-board power sup-
ply.
Alternatively, if the board is connected to the case, connect the front panel wires as shown in
Table 3 and press the power button on the PC case to turn ON the HiFive Unmatched board.
3.5.2 Turn OFF Power to Board
To turn off the board, press and hold the power pushbutton ( 24 in Figure 1) for about four sec-
onds. This will turn off the on-board power regulator, shutting off the board. Power OFF on the
board is indicated by the fan stopping and LEDs shutting off.
Alternatively, if the board is connected to the case, push and hold the power button on the case
to turn OFF the HiFive Unmatched board.
3.6 Connecting IOs to the Board
After setting up power to the board, connect IO devices as necessary.
3 Board Setup
HiFive Unmatched Getting Started Guide
© SiFive, Inc. Page 12