The HP RM1-4378-040CN (RM1-4378-040CN - HP 220-240V Low Voltage Power Supply Board for Color LaserJet 3800 CP3505 Printer) is a Power Supplies component engineered for sustained enterprise-class workloads. This part addresses common procurement scenarios where exact-match replacement, capacity expansion, or new-build deployment is required. Technical specifications include voltage of 240V. Common deployment scenarios include enterprise data-center, server-room, and managed-service-provider environments where matched-OEM-part procurement is required for warranty and compliance continuity. Pro Disk Network supplies the RM1-4378-040CN 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 RM1-4378-040CN is a HP power supplies component with voltage 240V. Pricing on the RM1-4378-040CN 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 RM1-4378-040CN 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
Quick Answer: Will the RM1-4378-040CN fit my system?
The RM1-4378-040CN is a HP 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 RM1-4378-040CN ship?
RM1-4378-040CN orders placed before 3 pm ET ship the same business day from US warehouses. Delivery is next business day to most metro ZIPs via FedEx/UPS overnight; ground delivery covers remaining US in 1-4 business days.
The RM1-4378-040CN 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.
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.
Telco / Battery Backup — DC-powered batteries for telco-class equipment, ISP CPE, and outdoor cabinets. Confirm voltage (-48 V vs +12/24 V).
What is the RM1-4378-040CN?
The RM1-4378-040CN is a HP server power supply unit with voltage 240V, manufactured by HP. 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 RM1-4378-040CN
Pros
Same-day US shipping reduces production downtime
Cons
Refurbished tier may show minor chassis-slot wear
Larger orders may ship LTL freight
Older form factors deprecated by latest chassis revisions
Frequently Asked Questions about RM1-4378-040CN
Is the RM1-4378-040CN a genuine HP part?
Yes. Pro Disk Network sources every RM1-4378-040CN as factory-original HP inventory. New units arrive sealed in OEM packaging; refurbished units are pulled from decommissioned HP servers, surface-tested, and re-warranted by Pro Disk Network for 90 days.
Will the RM1-4378-040CN fit my system?
The RM1-4378-040CN is a HP 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 RM1-4378-040CN ship?
RM1-4378-040CN orders placed before 3 pm ET ship the same business day from US warehouses. Delivery is next business day to most metro ZIPs via FedEx/UPS overnight; ground delivery covers remaining US in 1-4 business days.
What is the warranty on the RM1-4378-040CN?
New RM1-4378-040CN units carry the full HP 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 RM1-4378-040CN?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
Other parts that share the RM1 series prefix — useful when sourcing matched lots, hot-spare pools, or capacity-tier expansions.
RM1-4305-000CN — RM1-4305-000CN - HP Printer Paper Input (Pickup) Tray Assembly — $124.81
RM1-4310 — RM1-4310 - HP Fuser Assembly for LaserJet CM1015 Printer — $261.21
RM1-4310-000 — RM1-4310-000 - HP Fuser Assembly for LaserJet CM1015 Printer — $240.66
RM1-4310-000-CN — RM1-4310-000-CN - HP Fuser Assembly for LaserJet CM1015 Printer — $207.96
RM1-4310-000CN — RM1-4310-000CN - HP Fuser 110V for Color LaserJet CM1015 / CM1017 Series — $183.51
RM1-4312-000 — RM1-4312-000 - HP Face Up Paper Delivery Assembly for Color LaserJet CM1017 / CM1015 Series — $94.83
RM1-4312-000CN — RM1-4312-000CN - HP Face Up Paper Delivery Assembly for Color LaserJet CM1017 / CM1015 Series — $61.78
RM1-4312-050 — RM1-4312-050 - HP Face Up Paper Delivery Assembly for Color LaserJet CM1017 / CM1015 Printer — $74.18
RM1-4312-050CN — RM1-4312-050CN - HP Face Up Paper Delivery Assembly for Color LaserJet CM1017 / CM1015 Printer — $85.72
RM1-4313 — RM1-4313 - HP Fusing Assembly 220v for Color LaserJet CM1015 / CM1017 Series — $217.17
RM1-4313-000 — RM1-4313-000 - HP Fusing Assembly 220V for Color LaserJet CM1015 / CM1017 Series — $274.66
RM1-4313-000CN — RM1-4313-000CN - HP Fusing Assembly 220V for Color LaserJet CM1015 / CM1017 Series — $268.06
Pro Disk Network Buyer’s Guide: Power Supplies
PSU Sizing: Connected Load, Efficiency Curves, and N+1 Redundancy
For N+1 redundancy in a dual-PSU server, both PSUs must be rated to handle full load alone. This is non-negotiable in production: if a single PSU fails and the surviving one is undersized, the system shuts down. The RM1-4378-040CN should be matched in wattage rating to the partner PSU in the chassis; mismatched ratings sometimes work but trigger warnings in the BMC.
AC Input, Phase Balancing, and Datacentre Power Best Practices
Document the RM1-4378-040CN model, wattage, and partner PSU in your CMDB. Power audits typically find one or two undersized servers and one or two over-redundant clusters per rack — both of which waste capacity that could feed additional production load.