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49Y4821 — Server Specs & Substitutes

LENOVO · SERVER 1U
WHAT YOU NEED TO KNOW
1U = limited PCIe slots (usually 2-3 vs 6+ in 2U) Low-profile brackets only — full-height cards won't fit
Low-profile brackets ONLY — no full-height PCIe cards
PRODUCT OVERVIEW

The 1U PSU is a LENOVO power supply unit built for continuous operation in enterprise server and storage platforms. Key specifications include Form Factor: 1U Rack. The unit ships in a 1U form factor suitable for standard rack-mount installations.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
1U BAY→ 49Y4821
SPECIFICATIONS
Form Factor1U Rack
FITS THESE MACHINES
Lenovo System x x3550 M3
Lenovo System x x3650 M3
Lenovo System x x3690 X5
Lenovo System x3530 M4
Lenovo System x3620 M3
Lenovo System x3630 M3
Lenovo System x3850 X5
Lenovo ThinkServer RD210
Lenovo ThinkServer RD220
COMPONENT DIAGRAM
LENOVO BAY 0 BAY 1 BAY 2 BAY 3 FAN PSU 500W iLO / BMC | NIC | VGA | USB | PCIe LP 19" RACK WIDTH | 1U HEIGHT (44mm) LOW-PROFILE BRACKETS ONLY -- Full-height PCIe cards WILL NOT FIT in 1U chassis LENOVO 1U RACK SERVER | Gen10 | 4x SFF BAYS | LP PCIe ONLY Fewer drive bays = SSD/NVMe builds | 1U-specific rail kit required | Shorter depth TITLE 1U SERVER PN 49Y4821 MFR LENOVO Gen10 RACK SERVER
KEY FEATURES
•
1U Form Factor
TYPICAL APPLICATIONS
  • Server power supply replacement (failed or degraded)
  • Redundant power upgrade for high-availability
  • Power capacity upgrade for GPU or expansion configurations
  • Hot-swap power maintenance in production environments
  • Spare inventory for break-fix operations
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE

No lifecycle data available.

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FREQUENTLY ASKED QUESTIONS
What is 49Y4821?
49Y4821 is a 1U PSU manufactured by LENOVO.
Is 49Y4821 still available?
49Y4821 is currently Unknown.
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PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.