The Cisco WS-CAC-4500W (WS-CAC-4500W - Cisco 4000-Watts AC Power Supply) 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 power of 4000W. 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 sources the WS-CAC-4500W through reputable distribution channels and applies a verification check against the OEM compatibility matrix before each unit is added to active inventory. Each unit ships from a US fulfillment hub (Hillsboro OR, Atlanta GA, or Phoenix AZ) with same-day dispatch on in-stock orders before 3pm ET. 90-day Pro Disk Network functional warranty included; free US ground shipping on orders over $150.
The WS-CAC-4500W is a Cisco power supplies component with power 4000W. Pricing on the WS-CAC-4500W 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 WS-CAC-4500W are shown on this page.
Trust Signals
US-based LLC — 7345 W Sand Lake Rd, STE 210, Office 3208, Orlando, FL 32819
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 WS-CAC-4500W fit my system?
The WS-CAC-4500W is a Cisco 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 WS-CAC-4500W ship?
WS-CAC-4500W 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 WS-CAC-4500W 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 WS-CAC-4500W?
The WS-CAC-4500W is a Cisco server power supply unit with power 4000W, manufactured by Cisco. 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 WS-CAC-4500W
Pros
Lower cost than OEM channel pricing
Matched-pair option for dual-PSU redundancy
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 WS-CAC-4500W
Is the WS-CAC-4500W a genuine Cisco part?
Yes. Pro Disk Network sources every WS-CAC-4500W as factory-original Cisco inventory. New units arrive sealed in OEM packaging; refurbished units are pulled from decommissioned Cisco servers, surface-tested, and re-warranted by Pro Disk Network for 90 days.
Will the WS-CAC-4500W fit my system?
The WS-CAC-4500W is a Cisco 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 WS-CAC-4500W ship?
WS-CAC-4500W 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 WS-CAC-4500W?
New WS-CAC-4500W units carry the full Cisco 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 WS-CAC-4500W?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
Other parts that share the WS series prefix — useful when sourcing matched lots, hot-spare pools, or capacity-tier expansions.
WS-CAC-1000W — WS-CAC-1000W - Cisco 1000-Watts AC Power Supply For Catalyst 6000 — $57.29
WS-CAC-1000W-2 — Cisco WS-CAC-1000W/2 1000-Watts Power Supply for Catalyst 6000 — $110.41
WS-CAC-1300W — WS-CAC-1300W - Cisco 1300-Watts AC Power Supply For Catalyst 6500 — $175.71
WS-CAC-1300W-2 — Cisco WS-CAC-1300W/2 1300-Watts Power Supply for Catalyst 6000 / 6500 — $55.10
WS-CAC-2500W — WS-CAC-2500W - Cisco 2500-Watts AC Power Supply for Catalyst 6000 — $255.53
WS-CAC-2500W-2 — Cisco WS-CAC-2500W/2 2500-Watts AC Power Supply for Catalyst 6000 — $4,515.73
WS-CAC-3000W — WS-CAC-3000W - Cisco 3000-Watts AC Power Supply for Catalyst 6500 — $186.67
WS-CAC-4000W — WS-CAC-4000W - Cisco 4000-Watts AC Power Supply For Catalyst 6500 Series — $359.51
WS-CAC-4000W-INT — WS-CAC-4000W-INT - Cisco 4000-Watts AC Power Supply for Catalyst 6500 Series — $241.55
WS-CAC-4000W-US — WS-CAC-4000W-US - Cisco 4000-Watts Power Supply for Catalyst 6000 Series — $146.84
WS-CAC-6000W — WS-CAC-6000W - Cisco 6000-Watts Redundant Power Supply for Catalyst 6500 Series Switch — $294.17
WS-CAC-8700W-E — WS-CAC-8700W-E - Cisco 8700-Watts Enhanced AC Power Supply for Catalyst 6500 Series Switches — $178.46
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 WS-CAC-4500W 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 WS-CAC-4500W 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.