20 pin atx PSU in 24 pin ATX motherboard? X10SDV-4C+-TLN4F-O in CSE-505-203B 1U rack mount

[pious_greek]

The SuperMicro Superchassis CSE-505-203B 1U rack mount, includes a 200w PSU. The supermicro website lists compatible motherboards, and the X10SDV-TLN4F-O is listed on there as compatible.

BUT the 200w PSU in the rack mount has a 20 pin atx, while the X10SDV motherboard accepts a 24 pin ATX.

I have a 20 pin PSU to 24 pin motherboard adapter, but the 1U rack is very tight on space and i would prefer to avoid the adapter.

Given SuperMicro lists the board as compatible with the rack, can I safely operate the X10SDV off a 20 pin atx?

thank you

Code:

HARDWARE
SuperMicro Superchassis CSE-505-203B 1U rack mount, 200w PSU
X10SDV-4C+-TLN4F-O
Crucial 32GB Kit (16GBx2) DDR4-2133 MT/S (PC4-17000) CL15 dual ranked x4based ECC Registered Server Memory CT2K16G4RFD4213

INTEL I350T4V2BLK Gigabit Ethernet Network Server Adapter I350-T4 V2 Quad Ports
OR
Chelsio T520-BT, dual port 10GBase-T 10 Gigabit Ethernet Unified Wire adapter with PCI Express 3.0

Additional Parts
Supermicro FAN-0100L4 40X40X28MM 1U-4-Pin PWM Fan SC510 SC511
Supermicro MCP-320-81302-0B Single fan holder for one 40x28mm fan
Supermicro MCP-120-00063-0N Riser card bracket for slot-7 in SC504
Supermicro Riser Card RSC-RR1U-E16
Supermicro MCP-260-00100-0B 1U I/O Shield for X10SDV-7TP8F in SC510/SC505/SC504
9 Pin Motherboard Female Header to 2 Port Dual USB 2.0 Female Adapter Cable
2X SanDisk Ultra Fit 16GB USB 3.0 Flash Drive SDCZ43-016G-G46

 

[tvsjr]

Yes... just plug it in where it fits. Certain pins are keyed, so you won't be able to plug it in just anywhere. You should connect it to pins 1-20.

That said, I would be concerned about that PSU being able to handle the board and 4 drives.

 

[pious_greek]

I appreciate it, thank you.

 

[Johnnie Black]

Some more recent boards won't post with a 20 pin PSU, they require 24 pins, but no harm in trying, it won't damage anything.

 

[Ericloewe]

Yes, it's possible that the extra pins are on a physically different power bus on the motherboard. I'm not sure why anyone would do that, but it's possible.

 

[pious_greek]

Thank you, it posts, no issues so far.....