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2.24 – Installing the Power Supply
This motherboard is an ATX12V product but is also capable of using a standard ATX power supply.
J39: 20-pin main power connector
J40: 4-pin +12V power connector
J55: 4-pin peripheral power connector
J39 + J40:
J39 + J40 + J55:
Supports ATX12V
power supply
J39 + J55:
Supports ATX
power supply
If you use a standard ATX12V power supply you will only need to use J39 and J40. You can
also plug in J55 for an additional pathway for current distribution but is not a necessity.
However J55 is a necessity if you plan on using an ATX power supply.
If you use a standard ATX power supply, you need to plug J39+J55, or else system can’t
boot up.
We suggest using a 250W or higher power supply; this is of course dependent on how many
devices you attach. However, 250W is sufficient for systems without many devices (i.e. 1 hard
drive, 1 optical drive, and 1 or 2 expansion cards).
NOTE: The S2850 Tomcat K8S peripheral drive power connector must be independent of any
other devices. A device such as a DVD/CD-ROM drive, hard drive, or any other devices cannot be
attached onto the same power line. If connected, system stability is compromised.
2.25 – Finishing Up
Congratulations on making it this far! You’re finished setting up the hardware aspect of your
computer. Before closing up your chassis, make sure that all cables and wires are connected
properly, especially IDE cables and most importantly, jumpers. You may have difficulty powering
on your system if the motherboard jumpers are not set correctly.
In the rare circumstance that you have experienced difficulty, you can find help by asking your
vendor for assistance. If they are not available for assistance, please find setup information and
documentation online at our website or by
calling your vendor’s support line.