Question [SOLVED] Wrong Power Supply? Cables don't fit in Motherboard (B450 ITX + FSP220-50FGBBI(M))

Apr 6, 2022
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Been planning a briefcase PC build for a while, and I've finally got all the components. Was putting it altogether until I found that

1: The 4-pin on the 20+4 pin cable doesn't fit in the motherboard
2: There's no ATX_12V cable

Images of the cables and motherboard in question; View: https://imgur.com/a/UJnbiHa


I'm using an Aorus B450 I Pro WIFI ITX motherboard, with an FSP FSP220-50FGBBI(M) Flex PSU. The second cable from the PSU is weird, only having two SATA, a MOLEX, and some other thing. Am I able to just use adapter cables with these, or do I have to get a proper SFX/ATX power supply?

UPDATE: Apparently it should technically work with just a 20-pin in the ATX and a 4-pin in the ATX_12V, but I'm pretty concerned about blowing up the components so I'm just going to look for a new PSU. SFX PSUs aren't much bigger than the one I've got, apparently.
 
Last edited:

dwd999

Honorable
Been planning a briefcase PC build for a while, and I've finally got all the components. Was putting it altogether until I found that

1: The 4-pin on the 20+4 pin cable doesn't fit in the motherboard
2: There's no ATX_12V cable

Images of the cables and motherboard in question; View: https://imgur.com/a/UJnbiHa


I'm using an Aorus B450 I Pro WIFI ITX motherboard, with an FSP FSP220-50FGBBI(M) Flex PSU. The second cable from the PSU is weird, only having two SATA, a MOLEX, and some other thing. Am I able to just use adapter cables with these, or do I have to get a proper SFX/ATX power supply?
Page 13 of the motherboard manual recommends a power supply of at least 500 watts. But more importantly the diagram makes it clear that you need a 24 pin connector and an 8 pin connector, noting that without an 8 pin connector the motherboard will not start. So you'll need something larger, perhaps like this:

https://www.silverstonetek.com/product.php?pid=761&bno=&tb=14&area=en
 
Apr 6, 2022
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Page 13 of the motherboard manual recommends a power supply of at least 500 watts. But more importantly the diagram makes it clear that you need a 24 pin connector and an 8 pin connector, noting that without an 8 pin connector the motherboard will not start. So you'll need something larger, perhaps like this:

https://www.silverstonetek.com/product.php?pid=761&bno=&tb=14&area=en
I'm sort of thinking that, but two of my techy friends say it should be fine. More concerned about the 8-pin at the moment. I don't plan to have the PCIE slot occupied, its only going to be running integrated graphics, so it should need more than the estimated 120W.
 

dwd999

Honorable
I'm sort of thinking that, but two of my techy friends say it should be fine. More concerned about the 8-pin at the moment. I don't plan to have the PCIE slot occupied, its only going to be running integrated graphics, so it should need more than the estimated 120W.
If you want to get lower wattage its obviously your choice. But since the manual says the motherboard won't boot without the 8 pin cable you might read the manual together with your techie friends before making a final decision.
 
Apr 6, 2022
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Get the feeling you try to make a combination of the two, think the 4 pin in the pictures is the ATX 12V for the cpu.

Sure there is no second 4pin to combine with the 20pin? If not is that an old old psu and would i just look for something newer.
I bought it new, however oddly enough the new model of it (FSP220-60) uses proper ATX cord. One of my friends did reckon that the 4pin is for the CPU too. At this point I'll look for another PSU, they aren't that expensive. Still very annoying though.
 

USAFRet

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I'm sort of thinking that, but two of my techy friends say it should be fine. More concerned about the 8-pin at the moment. I don't plan to have the PCIE slot occupied, its only going to be running integrated graphics, so it should need more than the estimated 120W.
umm...it is "possible" that your techy friends are actually....wrong?

Why yes, it is absolutely possible.
Actually, very very likely they are wrong.
 
Been planning a briefcase PC build for a while, and I've finally got all the components. Was putting it altogether until I found that

1: The 4-pin on the 20+4 pin cable doesn't fit in the motherboard
2: There's no ATX_12V cable

Images of the cables and motherboard in question; View: https://imgur.com/a/UJnbiHa


I'm using an Aorus B450 I Pro WIFI ITX motherboard, with an FSP FSP220-50FGBBI(M) Flex PSU. The second cable from the PSU is weird, only having two SATA, a MOLEX, and some other thing. Am I able to just use adapter cables with these, or do I have to get a proper SFX/ATX power supply?

UPDATE: Apparently it should technically work with just a 20-pin in the ATX and a 4-pin in the ATX_12V, but I'm pretty concerned about blowing up the components so I'm just going to look for a new PSU. SFX PSUs aren't much bigger than the one I've got, apparently.
This PSU doesn't have a 20+4. It has a 20-pin.

The 4-pin IS the ATX12V cable.

https://www.fsp-group.com/download/pro/FSP220-50FGBBI(M)_Datasheet.pdf
 

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