L550E-S1 — Dell 550W Hot-Plug Server Power Supply, 80 PLUS Platinum 94% Efficiency (for PowerEdge R320/R330/R340/R420/R430/R440, T420)
MPN: L550E-S1|By: Dell
Starting from
$80
Indicative — final pricing confirmed with your quote.
In Stockships worldwide
- Condition:
- New — authorized channel
- Warranty:
- Full manufacturer warranty
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Product overview
This is the Dell 550W hot-plug Server power supply, 80 PLUS Platinum 94% efficiency (for PowerEdge R320/R330/R340/R420/R430/R440, T420), order code L550E-S1. The input side has to suit the rack: voltage, connector and whether the circuit can carry another unit at all. Tell us what the PDU presents and we will confirm the variant.
Quote requests are answered within 48 business hours, with availability confirmed before you raise a purchase order rather than after.
Featuring
- Power Rating
- 550W
- Redundancy
- Hot-Plug
- Compatible Platform
- PowerEdge R320/R330/R340/R420/R430/R440
- Manufacturer
- Dell
Physical characteristics
- Product Type
- Power Supplies
Miscellaneous
- Efficiency Rating
- 80 PLUS Platinum
- Expedited shipping options are available — rates confirmed with your quote.
- Purchase orders accepted from qualified institutions.
- Compatibility is validated against your server platform before dispatch. Send us the model and we will confirm support.
The table below is what the power supply is documented as, not what we have inferred from the part number. If the figure you need is missing, ask and we will source it from the manufacturer.
Where the Dell L550E-S1 is deployed
- Sourcing L550E-S1 against a build sheet that names it explicitly
- Adding a second supply to a chassis shipped with one
- Re-rating power after adding accelerators or drives
Who this part is for
- Teams re-rating power after adding GPUs or a full drive complement
- IT teams restoring redundancy after one supply in a pair has failed
- MSPs holding a matched PSU spare per chassis family
What you get ordering this from us
Ordered by part number
L550E-S1 is what is quoted and L550E-S1 is what ships; where an alternate code is genuinely the same part we name it rather than swap it silently.
Matched to the installed unit
Send the part number already in the chassis and we supply its pair, including the efficiency grade that stops the mismatch alert.
Answered by a human
A quote comes back with the reasoning attached, including the cases where we think you should buy something else.
Questions buyers ask about this part
- Is L550E-S1 genuine and is the warranty intact?
- Yes. It ships new in Dell packaging, which is what keeps the warranty and the firmware entitlement valid. Anything we cannot supply that way we tell you about before you order.
- Will L550E-S1 work in my server?
- Send the server model and the part number of the supply already fitted. In a redundant pair both units have to match on wattage and efficiency grade, or the chassis alerts on every boot.
- Do you accept purchase orders and quote at volume?
- Yes. Purchase orders are accepted from qualified organisations, net terms are available on approval, and tiered pricing applies at quantity. Tell us how many you need.
Compare other Power Supplies we stock
Browse all Power Supplies or everything we stock from Dell.
Specifying a system, not just the part?
An accelerated node draws far more than a general-purpose server, so power is sized with the build rather than assumed from the chassis.