Kontron KTQM87-mITX - Manual (Page 19)

KTD-N0886-A Page 17 System Specification
KTQM87/mITX Users Guide
Power Consumption 3.6
In order to ensure safe operation of the board, the ATX+12V power supply must monitor the supply voltage
and shut down if the supplies are out of range – refer to the actual power supply specification. Please note,
In order to keep the power consumption to a minimal level, boards do not implement a guaranteed
minimum load. In some cases, this can lead to compatibility problems with ATX power supplies, which
require a minimum load to stay in regulation. The KTQM87 board must be powered through the ATX+12V-4p
(4-pole) and the ATX+12V-24p (24-pole) connectors using standard ATX power supply.
ATX12V supply: Both ATX+12V-4p connector and ATX+12V-24p connector must be used in according to the
ATX12V PSU standard.
Warning: Hot Plugging power supply is not supported. Hot plugging might damage the board.
The requirements to the supply voltages are as follows:
Supply Min Max Note
VCC3.3 3.135V 3.465V Should be ±5% for compliance with the ATX specification
Vcc 4.75V 5.25V Should be ±5% for compliance with the ATX specification.
Should be +5/ -0% to meet the USB standard.
+12V 11.4V 12.6V Should be ±5% for compliance with the ATX specification
–12V –13.2V –10.8V Should be ±10% for compliance with the ATX specification
-5V -5,50V -4.5V Not required for the KTQM87 boards
5VSB 4.75V 5.25V Should be ±5% for compliance with the ATX specification
Note: -12V is only used for COM ports (COM1 and COM2).