Apple part number 661-6585 identifies the 661-6585 - Apple Thunderbolt to Firewire Cable Adapter for MacBook Pro 15-inch Retina, an enterprise-grade Power Adapters unit appropriate for data-center, server-room, and workstation deployment. Technical specifications include form factor of 15-inch, interface of Thunderbolt. 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 661-6585 to US business buyers. Listed compatibility: MacBook Pro 15. Cross-verify against the OEM compatibility matrix before deployment for production workloads. 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 661-6585 is a Apple power adapters component with form factor 15-inch, interface Thunderbolt. Pricing on the 661-6585 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 661-6585 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: Is the 661-6585 compatible with my switch?
Pro Disk Network validates every 661-6585 against the target switch's published compatibility matrix before shipment. If you let us know your switch model and firmware version, we will confirm fitment and code the module appropriately (Cisco-coded, Juniper-coded, HPE-coded, etc.) at no extra charge.
How fast does the 661-6585 ship?
If in stock, the 661-6585 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 661-6585 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.
Spine-Leaf Fabric — Top-of-rack 25G/100G aggregation between leaf and spine switches. Match speed and form factor across both endpoints.
Server Uplink — 10G/25G server-to-leaf uplink — pair with matching DAC or AOC at the host NIC to avoid optic mismatch.
DCI (Data Center Interconnect) — Inter-DC routing or aggregation. LR4/LR8 transceivers for 10–80 km, ER4 for 40 km, ZR4 for coherent long-haul.
Campus Distribution — Catalyst-class campus distribution between IDF and MDF closets. PoE+ where wireless APs and IP phones share infrastructure.
What is the 661-6585?
The 661-6585 is a Apple network interface module with form factor 15-inch and interface Thunderbolt, 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 661-6585
Pros
Same-day US shipping cuts deployment downtime
Cons
DAC cables capped at 7 m — use AOC or fibre for longer runs
SR optic vs LR optic confusion — verify before ordering
Refurbished tier optic does not include retail vendor packaging
Frequently Asked Questions about 661-6585
Is the 661-6585 a genuine Apple part?
Yes. Pro Disk Network sources every 661-6585 as factory-original Apple inventory. 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 90 days.
Is the 661-6585 compatible with my switch?
Pro Disk Network validates every 661-6585 against the target switch's published compatibility matrix before shipment. If you let us know your switch model and firmware version, we will confirm fitment and code the module appropriately (Cisco-coded, Juniper-coded, HPE-coded, etc.) at no extra charge.
How fast does the 661-6585 ship?
If in stock, the 661-6585 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 661-6585?
New 661-6585 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 (90 days refurbished). DOA replacement is free within 30 days of receipt.
Do you offer bulk pricing for the 661-6585?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
661-6504 — 661-6504 - Apple Display Clamshell Glossy for MacBook Pro 15 — $795.13
661-6505 — 661-6505 - Apple LCD Display Clamshell Assembly for MacBook Pro 15 — $1,136.27
661-6506 — 661-6506 - Apple Hi Resolution Anti Glare Display Clamshell for MacBook Pro 15 — $1,042.10
661-6507 — 661-6507 - Apple Clamshell Etched LAUSD LCD Display for MacBook Air 11 — $903.12
661-6508 — 661-6508 - Apple Clamshell Etched LAUSD LCD Display for MacBook Air 13 — $604.67
661-6509 — 661-6509 - Apple Top Case Keyboard Assembly for MacBook Pro 15.4 — $526.61
661-6510 — 661-6510 - Apple Wireless AirPort / Bluetooth Card for MacBook Pro 13 — $204.90
661-6529 — 661-6529 - Apple LCD Display Screen Assembly for MacBook Pro — $1,435.07
Pro Disk Network Buyer’s Guide: Power Adapters
Optic Coding, Vendor Lock-In, and Multi-Vendor Compatibility
Networking optics — SFP, SFP+, QSFP+, QSFP28 — are physically interoperable across vendors but logically restricted by firmware coding. The 661-6585 is coded for a specific vendor family at our factory step before shipping, which preserves the OEM warranty workflow and allows the optic to be recognised without ‘service unsupported-transceiver’ CLI overrides. Mixing third-party optics with same-vendor optics in the same chassis is safe; mixing across vendor codings sometimes triggers warnings in the switch log.
Bandwidth Sizing for Spine-Leaf, EVPN-VXLAN, and Hyperconverged Storage
For EVPN-VXLAN overlays, the 661-6585 carries the underlay tunnels in addition to the workload traffic. Plan for VXLAN encapsulation overhead (50 bytes) plus MTU headroom; set the underlay MTU to 9216 (jumbo frames) and the overlay MTU to 9000. Make sure both the 661-6585 and the connected NICs support jumbo frames — some older NICs cap at 9000-byte payloads even when jumbo-enabled.