Sourced for enterprise IT teams, the IBM 00YL559 (00YL559 - IBM 750-Watts Platinum AC Power Supply for System x3550 M5) is a Power Supplies component appropriate for new-build, expansion, or warranty-replacement procurement. Technical specifications include power of 750W. Typical use cases include in-place upgrades, EOL replacement under existing OEM service contracts, lab/test environments, and refurbished-rebuild programs. Pro Disk Network supplies the 00YL559 to US business buyers. Stocked units ship same-day on in-stock orders placed before 3pm ET. Pro Disk Network applies a 90-day functional warranty. Free US ground shipping on orders over $150; same-day expedited (UPS Next Day Air, FedEx Priority) available at checkout.
The 00YL559 is a IBM power supplies component with power 750W. Pricing on the 00YL559 is quote-based — email sales@prodisknetwork.com or use our live chat for a quote within one business day.
Reviewed By
Reviewed by:Pro Disk Network Engineering Team — . Specifications, compatibility, and pricing for the 00YL559 are shown on this page.
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Same-Day US Shipping — orders before 3pm ET ship today via UPS
30-Day Returns — pre-paid label on DOA and defective items
The 00YL559 is a IBM power supplies part. Email sales@prodisknetwork.com with your system make, model, and serial number - we will confirm compatibility and ship same-day if in stock.
How fast does the 00YL559 ship?
If in stock, the 00YL559 ships same business day on US orders placed before 3 pm ET. Most US ZIP codes receive next-business-day or 2-day delivery via FedEx/UPS Ground or Express. Bulk and project orders shipping in pallets are typically dispatched within 24-48 hours.
The 00YL559 is deployed by US enterprises, MSPs, government, and education customers across multiple infrastructure scenarios. Below are the most common deployment patterns Pro Disk Network sees in real-world orders.
Redundant Server Power — N+1 PSU configurations in dual-feed racks — order matched units in pairs to maintain hot-spare semantics.
Rack PDU Replacement — Vertical or horizontal PDUs in cabinet retrofits. Metered or switched models for granular outlet-level control.
Branch UPS — Office or remote site UPS. 1500–3000 VA covers most server-rack mini-deployments with 5–15 minute runtime.
Datacenter UPS Module — Online double-conversion UPS for production server rooms. Match VA rating to total connected load + 30% headroom.
What is the 00YL559?
The 00YL559 is a IBM server power supply unit with power 750W, manufactured by IBM. Pro Disk Network ships this part new and certified-refurbished from our US warehouse with same-day dispatch on orders placed before 3 PM ET, backed by a 30-day return guarantee.
Pros & Cons of 00YL559
Pros
Lower cost than OEM channel pricing
Matched-pair option for dual-PSU redundancy
Cons
Server-grade PSU — not for desktop or workstation use
Higher in-rush current — confirm UPS sizing
Frequently Asked Questions about 00YL559
Is the 00YL559 a genuine IBM part?
Yes. Pro Disk Network sources every 00YL559 as factory-original IBM inventory. New units arrive sealed in OEM packaging; refurbished units are pulled from decommissioned IBM servers, surface-tested, and re-warranted by Pro Disk Network for 90 days.
Will the 00YL559 fit my system?
The 00YL559 is a IBM power supplies part. Email sales@prodisknetwork.com with your system make, model, and serial number - we will confirm compatibility and ship same-day if in stock.
How fast does the 00YL559 ship?
If in stock, the 00YL559 ships same business day on US orders placed before 3 pm ET. Most US ZIP codes receive next-business-day or 2-day delivery via FedEx/UPS Ground or Express. Bulk and project orders shipping in pallets are typically dispatched within 24-48 hours.
What is the warranty on the 00YL559?
New 00YL559 units carry the full IBM manufacturer warranty (typically 1 to 5 years depending on product line). Refurbished and bulk-OEM units include a Pro Disk Network advance-replacement warranty (90 days refurbished). DOA replacement is free within 30 days of receipt.
Do you offer bulk pricing for the 00YL559?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
PSU Sizing: Connected Load, Efficiency Curves, and N+1 Redundancy
Sizing the 00YL559 or its replacement starts with calculating connected load. Add up the nameplate wattage of CPUs, GPUs, drives, fans, and add-in cards under maximum sustained load. Idle is irrelevant; peak sustained is what matters. Size the PSU at 60-80% of nameplate load for best efficiency — modern Platinum/Titanium PSUs hit peak efficiency at 50% load and degrade above 80%.
AC Input, Phase Balancing, and Datacentre Power Best Practices
For UPS-fed servers, confirm the UPS output waveform is compatible with the 00YL559's input. Modern PSUs accept both sine-wave and high-quality simulated sine-wave inputs, but older or stepped-approximation UPS outputs can cause buzzing or premature PSU failure. When in doubt, use double-conversion online UPS units.