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Сообщение от Vad71
Не умеет. А М2 - умеет, нужно перемычки правильно поставить
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Вот кусок из описания m2-ATX.
The 5V Standby Problem: One of most difficult tasks of operating a PC in a vehicle is power consumption while the computer is
OFF. Even when your computer is OFF or in Suspend, it will still consume about 50-150mA on the 5VSB rail. No matter how big
your battery is, you will eventually drain it if proper actions are not taken.
The M2-ATX is addressing these issues by cutting off the 5VSB rail after a pre-defined amount of time (see jumper chart,
HARDOFF). When 5VSB is always active (HARDOFF=Never), M2-ATX constantly monitors the battery levels. When battery level
drops below 11V for more than one minute, M2-ATX will shut down and re-activate only when the input voltage is > 12V.
И далее
2.0 Mode of operation
1) Ignition=OFF. Nothing happens. M2-ATX is waiting for ignition signals.
2) Ignition=ON. M2-ATX waits for few seconds then turns on the 5VSB rail. After another second M2-ATX sends an “ON” signal to the motherboard via the 2
wires connected to the motherboard’s ON/OFF pins. The motherboard will turn ON and your system should start booting. The Ignition state will be latched for
60 more seconds so that the motherboard will have a change to come up in a clean manner.
3) Ignition=ON. Your computer will remain ON.
4) Ignition=OFF. M2-ATX waits for “OFFDELAY” in seconds (see jumper chart) and then it turns the motherboard OFF by sending a signal to the motherboard’s
ON/OFF switch. Your computer should turn off gracefully (shutdown procedure). After shutdown, 5VSB will still be provided for another “HARDOFF” seconds.
In the event where the shutdown process is longer than “HARDOFF” (Operating System gets frozen, etc), power will be shut down hard, turning off all power
rails. During the HARDOFF procedure, the battery levels will be constantly monitored to prevent deep discharge situations.
5) M2-ATX will go to step 1, if ignition is tuned ON again.
То есть если HardOff не выставлен в Never, 5VSB будет выключен через HardOff delay, что для ждущего режима неприемлемо. Если HardOff выставлен в Never, то все линии подаются пока комп сам не выключится. То есть если комп зависнет в процессе перехода в ждущий режим, а ушел водитель надолго, то когда придет, напряжение на аккумуляторе будет 11.2 вольта.