Ya easily. just take the ATX smps and pull out it's two extra pin from it's power plug and set it to the PC.
At smps have only 20 pin power connector atx have 20 + 4 pin power connectors atx smps 24 + 4 pin power connectors at (advanced technology)is old model smps atx (advanced technology extended) is new model
24
Basic difference between these are :- AT means "Advance Technology" while ATX is used for "Advance Technology Extended" SMPS. With respect to AT SMPS, ATX has an extra Plug of +12v Supply for Motherboard. It has four wires connected in square size plug. Two of them are Yellow and other two are black.
Advanced Technology Extended Switched Mode Power Supply
The ATX power supply and AT power supply had different connections for the computer motherboard. Also the ATX power supply had provision for some parts of the power supply to be switched on-and-off by the electronics on the motherboard, possibly under the control of software. With an AT power supply it necessary for the user to physically operate a switch. This control feature means that a computer that has an ATX power supply can provide, for example, a "wake-on-LAN" or "wake-on-modem" feature whereby the computer will switch itself on if their a signal on the ethernet cable or modem cable. If necessary it should be possible to adapt an ATX power supply to replace an AT power supply. This could be done by finding an adapter cable. The mother board cable from the ATX power supply would then plug into the adapter cable and the adapter cable would plug into the motherboard.
ATX technology is related to the SMPS in which when the user shutdowns the PC, there will be power supplied to the motherboard until the mains are removed. Thus ATX technology helps in remote start up of PC whereas this is not possible with AT technology where the power is totally not supplied to the motherboard when PC is in shutdown state
There are not really any advantages with a ATX over a Micro ATX just Micro ATX is smaller and ATX is larger
smps means switch mode power supply
smps
Connect Pin No. 14 & 15 on SMPS, if the fan moves then SMPS is working fine else SMPS is faulty.
SMPS are mainly 4: flyback pushpull halfbridge full bridge
ATX