Any standard ATX power supply will work great with the Sun 9641A.
The Sun 9641A case is an external case for mass storage.
No you can buy a supply seperate but the case always has a supply.
Yes, you can use a 12V 5 amp power supply in place of a 12V 3 amp power supply. The higher amp rating means the power supply can provide more current if needed, but it will only supply what the device requires, which is 3 amps in this case. Just ensure that the voltage matches and that the power supply is compatible with your device's requirements.
1.the form factor of the case 2. the voltage requirements of peripheral devices
When your computer will not power on. When the cooling fan of the power supply has failed. When the amount of hardware in use in your case exceeds the power capability of your power supply.
Case: minitowers:compact cases,low-profile cases or slimline cases. Power supply: ATX power supply
1.the form factor of the case 2. the voltage requirements of peripheral devices
Case: Your motherboard must be able to fit in your case and must support your motherboard size (correctly placed standoffs). Power Supply: You can't have a shortage of power or else your power supply will get overloaded and "die", or even possibly explode for that matter.
AT power supplies have a manual power switch function. Usually on the Power Supply itself, but some times wired to the case. Check your power wiring diagrams.
Upgrading your power supply from 300 watts to 800 watts will not inherently cause a PC to overheat. The power supply itself does not generate excess heat just by having a higher wattage rating; it only delivers the necessary power to components as needed. However, if the new power supply has poor efficiency or inadequate cooling, it could contribute to higher temperatures. Ensuring proper airflow and cooling in your PC case is essential regardless of the power supply wattage.
4 screws
It is a back up power supply to the sbc braking system. Just in case their is a total power failure with vehicles power supply.