The 661-3841 is a Apple power supplies & power protection component. Pro Disk Network sells the 661-3841 for $214.34 with same-day US shipping and a 30-day free return guarantee.
Reviewed By
Reviewed by:Pro Disk Network Engineering Team — . Specifications, compatibility, and pricing for the 661-3841 verified against the manufacturer datasheet and our internal lab benchmarks.
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Florida-Registered LLC — 7345 W Sand Lake Rd, Orlando FL 32819
Same-Day US Shipping — orders before 3pm ET ship today via FedEx/UPS
30-Day Free Returns — pre-paid label included on all US orders
Net 30 Available — for verified business buyers
2,000+ B2B Customers — MSPs, government, education, enterprise IT
The 661-3841 is a Apple power supplies & power protection 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 661-3841 ship?
661-3841 orders placed before 2 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 661-3841 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).
New, Bulk, or Refurbished — Choosing Your Tier
Pro Disk Network offers the 661-3841 across three procurement tiers. Each tier is fully functional and warranted; the choice comes down to budget, warranty length, and whether the deployment is production-critical or capacity-expansion.
Tier
Discount vs OEM List
Warranty
Best For
New (Sealed OEM)
25–40%
Apple manufacturer warranty (1–5 yr)
Production-critical first-tier
New (Bulk OEM)
50–65%
3-year Pro Disk Network warranty
New cluster builds, secondary tier
Refurbished
75–85%
12-month advance replacement
Capacity expansion, lab, dev/test, EOL refresh
Bulk & Volume Pricing for 661-3841
Ships from our Orlando, FL warehouse — same-day US dispatch on orders placed before 2pm ET. Net 30 terms available for verified businesses, government and education.
Volume discounts on the 661-3841 are automatic at checkout. Net 30 terms available for verified businesses, government, and education. Email sales@prodisknetwork.com for orders above 100 units.
Quantity
Discount
Unit Price
1
0%
$214.34
5+
4%
$205.77
10+
8%
$197.19
25+
13%
$186.48
50+
18%
$175.76
100+
23%
$165.04
What is the 661-3841?
The 661-3841 is a Apple server power supply unit, manufactured by Apple. 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 661-3841
Pros
Burn-in tested against full rated load before shipping
Drop-in replacement for failed PSUs in matching chassis
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 661-3841
Is the 661-3841 a genuine Apple part?
Yes. Pro Disk Network sources every 661-3841 as factory-original Apple inventory verified against the manufacturer parts registry before listing. New units arrive sealed in OEM packaging; refurbished units are pulled from decommissioned Apple servers, surface-tested, and re-warranted by Pro Disk Network for 12 months.
Will the 661-3841 fit my system?
The 661-3841 is a Apple power supplies & power protection 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 661-3841 ship?
661-3841 orders placed before 2 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 661-3841?
New 661-3841 units carry the full Apple manufacturer warranty (typically 1 to 5 years depending on product line). Refurbished and bulk-OEM units include a Pro Disk Network advance-replacement warranty (12 months refurbished, 36 months new bulk). DOA replacement is free within 30 days of receipt.
Do you offer bulk pricing for the 661-3841?
Yes. Pro Disk Network offers automatic volume discounts at 10, 25, 50, and 100+ unit tiers. Net 30 terms are available for verified businesses, government, and education buyers. Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
Other parts that share the 661 series prefix — useful when sourcing matched lots, hot-spare pools, or capacity-tier expansions.
661-3800 — 661-3800 - Apple 109-Keys USB White Pro Keyboard — $220.91
661-3811 — 661-3811 - Apple Camera Board for iMac G5 17 iSight — $330.07
661-3815 — 661-3815 - Apple 500GB 7200RPM SATA 3Gb/s 3.5-inch Hard Drive — $854.91
661-3816 — 661-3816 - Apple 500GB 7200RPM PATA 3.5-Inch Hard Drive for Xserve RAID A1004 — $944.47
Pro Disk Network Buyer’s Guide: Power Supplies & Power Protection
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 661-3841 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 661-3841 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.