Yes, but some systems may require a hardware modification to accomplish this. Please refer to the chart below or contact your Sales rep for additional information:

CPU Board Power Voltages Required
ADLLX8PC AT 5 volt only (12V input optional)
ADLS15PC AT 5 volt only (12V input optional)
ADLD25PC ATX 5 volt only (12V input optional)
ADLN2000PC ATX 5 volt only (12V input optional)
ADL855PC AT 5 volt only (12V input optional)
ADL945PC AT 5 volt only (12V input optional)
ADLGS45PC ATX 5V + 12V** (**requires minor hardware mod for 5V only operation)
ADLQM67PC ATX 5V + 12V** (**requires minor hardware mod for 5V only operation)
ADLQM87PC ATX 5V + 12V** (**requires minor hardware mod for 5V only operation)
ADLE3800PC ATX 5 volt only (12V input optional)