Adding more fan headers to Supermicro CSE-PTJBOD-CB2 power board

[jbod_or_die]

I recently acquired a Supermicro CSE-PTJBOD-CB2 power board to power a JBOD but it arrived with only 2 fan headers with perhaps with spots for more (highlighted in picture).

How would I go about adding more fan headers? Do I just buy some off eBay and solder them on? Also why would they only come with 2 in the first place?

Thanks

 

[nexox]

It's hard to tell for sure from that picture, but the RPM sense lines from the unpopulated headers seem to lead to a 16 pin chip that is also missing, so you wouldn't be able to monitor the fans. Edit: Either power or ground is not connected, there's an additional SMD component missing from each, I'm guessing they're fuses.

 

[jbod_or_die]

Gotcha, if I'm just looking to power the fans but not monitor them, would that still work? Thanks

 

[nexox]

I think you'd need to solder in a fuse (or something like a bridge if you don't like over current protection) for each header, easy if you have some SMD soldering experience, maybe not so fun if you're like me and just solder through hole parts.

 

[RolloZ170]

Also why would they only come with 2 in the first place?

made for OEM
you can have 4 without need more component other than the fuses.