HPE ProLiant ML110 Gen10 Power Supplies
Genuine HPE power supplies for the HPE ProLiant ML110 Gen10, new and refurbished. This tower ships non-redundant, and the consequence runs further than it looks: the 550W ATX supply is fixed, single, and will not support the redundant fan option, so leaving it behind means the enablement kit and a matching pair of Flex Slot supplies rather than one replacement unit.
ML110 Gen10 Power Supply Specifications
- Standard supply: the HPE ML110 Gen10 550W ATX Power Supply Kit, the non-redundant AC option for Gen10 Essential servers, certified at Gold-level 90% efficiency
- Hot-plug supply: the 800W Flex Slot Platinum hot-plug kit, rated up to 94% efficiency with a standard C-14 power inlet connector
- Enablement: Flex Slot supplies require the HPE ML110 Gen10 Redundant Power Supply Enablement Kit, and one enablement kit supports two supplies
- Matching rule: mixing supplies in the same enablement kit is not supported — every supply must agree on input voltage, output rating and efficiency rating
- Fan interaction: the ATX supply will not support the redundant fan option, and the enablement kit is what makes the redundant fan kit possible
- Input and heat: rated line voltage of 100 to 120 VAC; the 550W unit draws under 639W at 100 VAC and under 605W at 200 VAC, dissipating up to 2204 BTU/hr
The 550W ATX supply blocks the redundant fan kit. HPE states that the ATX power supply will not support the redundant fan option, so a machine that needs redundant cooling needs the enablement kit and two matching hot-plug Flex Slot supplies as well. Mixing inside one enablement kit is not supported: input voltage, output rating and efficiency rating all have to agree.
Do You Need the ATX Supply or a Flex Slot Pair?
| 550W ATX | 800W Flex Slot Platinum | |
|---|---|---|
| Mounting | Fixed, internal | Hot-plug, tool-less |
| Redundancy | None — a single supply | 1+1 with two matching units |
| Extra kit required | None | Redundant power supply enablement kit |
| Redundant fan kit | Not supported | Supported |
| Efficiency | Gold, 90% | Platinum, up to 94% |
The decision is not really about watts. A 550W ATX machine is a single-supply machine that cannot take the redundant fan kit, and moving away from that costs the enablement kit plus two matching supplies rather than one. HPE settles the question for some builds anyway: the redundant fan and the 800W redundant power supply are both required when a second drive cage runs 15K SAS drives, when a SAS SSD is fitted, and where the A3 extended operating environment has to be met.
Choosing the Right ML110 Gen10 Power Supply
- Read what is fitted before ordering anything. An ATX chassis and a Flex Slot chassis are different power arrangements, and one supply is not a substitute for the other.
- Redundancy is three purchases, not one. A 1+1 configuration is the enablement kit plus two matching Flex Slot supplies; a single supply is not redundant whatever it is rated at.
- Matching means all three properties. Input voltage, output rating and efficiency rating all have to agree, so two 800W units are still a mismatch if one is Platinum and the other Titanium.
- Some storage choices decide this for you. A second drive cage with 15K SAS drives, or any SAS SSD, brings the redundant fan and the 800W redundant supply with it.
- Size to the configuration, not to the ceiling. HPE publishes a Power Advisor for sizing a specific build, and a supply running far below its rating sits away from its best efficiency point.
Complete Your ML110 Gen10 Build
Power and cooling follow the drives on this platform — see ML110 Gen10 drives before sizing a supply, and storage controllers if SAS is part of the plan. Also available: ML110 Gen10 memory, networking adapters and rack options, or the full ML110 Gen10 parts listing. Background reading: how to fix excessive fan noise in HPE ProLiant servers.
ML110 Gen10 Power Supplies FAQ
Is the ML110 Gen10 power supply redundant?
Not as standard. The 550W ATX supply is a single fixed unit. Redundancy means the redundant power supply enablement kit plus two matching hot-plug Flex Slot supplies.
Can I mix power supplies in an ML110 Gen10?
No. HPE states that within one enablement kit all supplies must share the same input voltage, output rating and efficiency rating, and that non-matching units can produce an error message or operational problems.
What does the redundant power supply enablement kit do?
It is what lets the tower carry two hot-plug Flex Slot supplies instead of the fixed ATX unit. One kit supports two supplies, and it is also required before the redundant fan kit can be fitted.
Why will my ATX server not take the redundant fan kit?
HPE states that the ATX power supply does not support the redundant fan option. The redundant fan kit goes with the 800W redundant power supply arrangement instead.
How much power does a 550W ML110 Gen10 draw?
HPE rates its input at under 639W at 100 VAC and under 605W at 200 VAC, with a maximum heat output of 2204 BTU/hr at 100 VAC.
What efficiency ratings are available for this server?
The 550W ATX supply is certified at Gold level, 90 percent. The Flex Slot Platinum supplies are rated up to 94 percent efficiency.
✅ Looking for a specific ML110 Gen10 power supply? Browse our full selection below.


