Sourced for enterprise IT teams managing Cisco UCS C-Series and B-Series blade chassis, plus Catalyst and Nexus switching platforms, the Cisco DS-SFP-FC4G-MR (DS-SFP-FC4G-MR - Cisco 4.25Gb/s Fibre Channel Single-ModeFiber 4km 1310nm Duplex LC Connector SFP Transceiver Module) is a Networking Devices component matched to OEM specifications. Each unit is verified against manufacturer datasheet revisions and is appropriate for new-build, expansion, or warranty-replacement procurement. Technical specifications include capacity of 4.25 GB, interface of Fibre Channel, data rate of 25 Gb/s, wavelength of 1310 nm, range of 4 km. Appropriate for enterprise core-aggregation tier, hyperscale leaf-spine fabric expansion, EVE-NG / GNS3 lab environments at scale, and matched-pair high-availability switching deployments. Pro Disk Network sources the DS-SFP-FC4G-MR 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. Net 30 / Net 60 terms available for qualified business, government, and education accounts. 90-day Pro Disk Network functional warranty included; free US ground shipping on orders over $150.
The DS-SFP-FC4G-MR is a Cisco networking devices component with capacity 4.25 GB, interface Fibre Channel, data rate 25 Gb/s. Pro Disk Network sells the DS-SFP-FC4G-MR for $86.11 with same-day US shipping and a 30-day return guarantee.
Reviewed By
Reviewed by:Pro Disk Network Engineering Team — . Specifications, compatibility, and pricing for the DS-SFP-FC4G-MR verified against the manufacturer datasheet and our internal lab benchmarks.
Quick Answer: Is the DS-SFP-FC4G-MR compatible with my switch?
Pro Disk Network validates every DS-SFP-FC4G-MR 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 DS-SFP-FC4G-MR ship?
DS-SFP-FC4G-MR 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 DS-SFP-FC4G-MR 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.
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.
Branch / Edge — Smaller form-factor switches and routers for branch sites. SD-WAN-compatible or static-VPN-attached as the architecture dictates.
New, Bulk, or Refurbished — Choosing Your Tier
Pro Disk Network offers the DS-SFP-FC4G-MR 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%
Cisco 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%
90-day advance replacement
Capacity expansion, lab, dev/test, EOL refresh
Bulk & Volume Pricing for DS-SFP-FC4G-MR
Ships from our US warehouse — same-day US dispatch on orders placed before 3pm ET. Net 30 terms available for verified businesses, government and education.
Volume discounts on the DS-SFP-FC4G-MR 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%
$86.11
5+
4%
$82.67
10+
8%
$79.22
25+
13%
$74.92
50+
18%
$70.61
100+
23%
$66.30
What is the DS-SFP-FC4G-MR?
The DS-SFP-FC4G-MR is a Cisco enterprise networking device with capacity 4.25 GB and interface Fibre Channel, 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 DS-SFP-FC4G-MR
Pros
Verified compatibility with leaf-spine and EOR/MOR topologies
Matched-pair option for redundant link orders
Cabling and DAC/AOC labels clearly mark optic class
Cons
Third-party optic — some firmware revs require "service unsupported transceiver-type"
Bulk DAC orders may ship LTL on >100-pc reels
Confirm transceiver coding before mixing vendors in the same chassis
Frequently Asked Questions about DS-SFP-FC4G-MR
Is the DS-SFP-FC4G-MR a genuine Cisco part?
Yes. Pro Disk Network sources every DS-SFP-FC4G-MR as factory-original Cisco inventory verified against the manufacturer parts registry before listing. 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.
Is the DS-SFP-FC4G-MR compatible with my switch?
Pro Disk Network validates every DS-SFP-FC4G-MR 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 DS-SFP-FC4G-MR ship?
DS-SFP-FC4G-MR 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 DS-SFP-FC4G-MR?
New DS-SFP-FC4G-MR 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, 36 months new bulk). DOA replacement is free within 30 days of receipt.
Do you offer bulk pricing for the DS-SFP-FC4G-MR?
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.
Pro Disk Network Buyer’s Guide: Networking Devices
Optic Coding, Vendor Lock-In, and Multi-Vendor Compatibility
For Cisco IOS, IOS-XE, and NX-OS switches, the DS-SFP-FC4G-MR works out-of-box if coded for Cisco; for Aruba ArubaOS-CX, code for HPE/Aruba; for Juniper Junos, code for Juniper. Pro Disk Network confirms the target vendor coding at order time and applies it before shipping. Misordered coding can be flashed in the field but the lead time is longer than ordering correctly the first time.
Bandwidth Sizing for Spine-Leaf, EVPN-VXLAN, and Hyperconverged Storage
Document optic types and bandwidth in your network drawings: SR-SR for intra-rack, LR-LR for inter-rack and DCI, ZR4 for long-haul coherent. Mismatched optic-distance ratings is the most common cause of intermittent link errors that look like cable problems but aren't.