The S19 KPro is an exclusive model PSU designed by Bitmain.

The power supply unit (PSU) is a fundamental component of the Bitcoin ASIC machine. The S19 KPro (pictured below) is a specific PSU for the  S19 KPro model ASIC machine.

Generally, there are specific model PSU’s that are compatible with specific Bitcoin Mining Machines.

Hardware Review: Final Grade – 77/100 C+

While the S19Kpro, like most next-gen Bitmain machines, is an adaptable machine due to it’s ability to install different types of control boards, the design of this particular model is of lower quality than it’s JPro constituents, simply in part because the JPro model PSU’s are usually of a simpler design, which make them easier to assemble and disassemble.

I’m giving this one a solid C+ because, while it’s not the worst machine in production, it’s definitely not the best in terms of technician-assembly friendliness.

1. Materials needed:
A. Drill (w/phillips head) 

B. Phillips head screwdriver.

When assembling the PSU, always remember, “Righty Tighty Lefty Loosey.” Turn the screw right to tighten and turn it left to loosen the screw.

2. Remove the top 3 screws so that both lids are completely off. 

3. Remove the 4 larger screws from the battery terminal and remove the the 2 power cables connected to the control board. 

4. Remove the fan gate on the backside of the server. (4 screws at each corner)

5. Gently slide the old psu off. Once removed, This is what the PSU will look like. 

6. Gently Slide the New PSU on.

7. Put the fan gate back on with 4 screws.

8. Attach the terminal screws to the top of the psu and connect the 2 power cables. 

9. For your convenience, put the smaller of the two top lids on first

10. Great Job! You’ve just replaced the psu on an S19Kpro

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