User Guide

Frequently Asked Questions
A-8
Features ADM 2.0 LDCM 3.0
VGA card
No limitation Only ATI
Network card
No limitation Only Intel
Support DMI BIOS 2.0
Yes Yes
Support Win95
Yes Yes
Support Win NT
No (will be supported
on ADM 2.1)
Yes
Real-Time CPU/Memory
Utilization Monitoring
Yes No
Multi-Machine
Monitoring on One Screen
Yes No
Remote Management
Protocol
Standard SNMP
protocol
Intel proprietary RAP
protocol
Standard SNMP Trap
Yes (so that can work
with standard software
such as HP Open View)
No
Remote File Transfer
No Yes
Q: Why do AOpen MBs use many Electrolytic Capacitors instead of
Tantalum Capacitor?
A: The quality of Electrolytic capacitor has huge difference depends on model
and vendor. Normally, Tantalum capacitor is better than Electrolytic capacitor,
but good quality and high price Electrolytic capacitor is even better than
Tantalum capacitor. Originally, AOpen motherboards use 100uF Tantalum
capacitor nears CPU to reduce voltage ripple, but the technology improvement
has introduced an 1000uF very low ESR (Equivalent Serial Resistor) of
Electrolytic capacitor with only 0.15 ohm comparing with 0.7 ohm of Tantalum
capacitor. The lower the ESR and higher the capacitance value, the smaller
the CPU voltage ripple.
Following are the specifications of capacitors that AOpen is currently using:
Tantalum: SPRAGUE 100uF,
Part number 595D107X06R3C2T,
Max ESR is 0.7 at 25 degree 100KHz.
Electrolytic: SANYO 1000uF,
Part number 16MV1000CG,
Max ESR is 0.15 at 20 degree 100khz.