QSFP-4SFP10-CU0-5 - Cisco 0.5m 40GBase-CR4 QSFP to 4 10GBase-CU SFP+ Direct Attach Copper Breakout Cable

QSFP-4SFP10-CU0-5 - Cisco 0.5m 40GBase-CR4 QSFP to 4 10GBase-CU SFP+ Direct Attach Copper Breakout Cable

SKU: QSFP-4SFP10-CU0-5 Brand: Cisco Category: Network Ethernet Cables
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About the QSFP-4SFP10-CU0-5

Cisco part number QSFP-4SFP10-CU0-5 identifies the QSFP-4SFP10-CU0-5 - Cisco 0.5m 40GBase-CR4 QSFP to 4 10GBase-CU SFP+ Direct Attach Copper Breakout Cable, an enterprise-grade Network Ethernet Cables unit appropriate for data-center, server-room, and workstation deployment. Technical specifications include network speed of 40 GbE, range of 0.5 m, features of QSFP. Typical use cases include enterprise LAN core-distribution-access architecture, hyperconverged cluster east-west traffic, SAN fabric uplinks, and replacement of EOL/EOSL networking infrastructure under existing OEM warranty contracts. Pro Disk Network sources the QSFP-4SFP10-CU0-5 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.

Specifications

Part Identification

Technical Specifications

  • Network Speed

    40 GbE

  • Range

    0.5 m

  • Features

    QSFP

Order & Fulfillment Details

  • Condition

    Refurbished

    Quality Tier
    Professionally tested — new available on request

  • Warranty

    90-Day Pro Disk Network Warranty

    Coverage
    Advance replacement — we ship first, you return the faulty unit

  • Shipping

    Free over $150 — Same-Day Dispatch

    Cutoff
    Orders placed before 3pm ET

  • Returns

    30-Day Returns — US

    Return Window
    Original packaging required
Part Number / MPNQSFP-4SFP10-CU0-5
ManufacturerCisco
CategoryNetwork Ethernet Cables
Network Speed40 GbE
Range0.5 m
FeaturesQSFP
ConditionRefurbished — new available on request
Warranty90-Day Pro Disk Network Warranty — advance replacement
ShippingFree over $150 — Same-Day Dispatch
Returns30-Day Returns — US
View Full Details & Buy Now

The QSFP-4SFP10-CU0-5 is a Cisco network ethernet cables component with network speed 40 GbE, range 0.5 m, features QSFP. Pricing on the QSFP-4SFP10-CU0-5 is quote-based — email sales@prodisknetwork.com or use our live chat for a quote within one business day.

Reviewed by: — . Specifications, compatibility, and pricing for the QSFP-4SFP10-CU0-5 are shown on this page.

  • 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

Looking for more Cisco parts? Browse the full Pro Disk Network Cisco catalog › Same-day US shipping, 30-day returns on every Cisco order.

Have technical questions about network switches? Real questions from IT engineers, answered by Pro Disk Engineering ›

Quick Answer: Is the QSFP-4SFP10-CU0-5 compatible with my switch?

Pro Disk Network validates every QSFP-4SFP10-CU0-5 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 QSFP-4SFP10-CU0-5 ship?

If in stock, the QSFP-4SFP10-CU0-5 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.

Email engineering for a compatibility check ›

Common Use Cases for QSFP-4SFP10-CU0-5

The QSFP-4SFP10-CU0-5 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 QSFP-4SFP10-CU0-5?

The QSFP-4SFP10-CU0-5 is a Cisco enterprise networking device with network speed 40 GbE and range 0.5 m, 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 QSFP-4SFP10-CU0-5

Pros

  • Same-day US shipping cuts deployment downtime

Cons

  • Not for hyperscale ZR coherent — different SKU family
  • Some vendors deprecate firmware on EOL part numbers
  • Mismatched optic+switch firmware can require manual override

Frequently Asked Questions about QSFP-4SFP10-CU0-5

Is the QSFP-4SFP10-CU0-5 a genuine Cisco part?
Yes. Pro Disk Network sources every QSFP-4SFP10-CU0-5 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.
Is the QSFP-4SFP10-CU0-5 compatible with my switch?
Pro Disk Network validates every QSFP-4SFP10-CU0-5 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 QSFP-4SFP10-CU0-5 ship?
If in stock, the QSFP-4SFP10-CU0-5 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 QSFP-4SFP10-CU0-5?
New QSFP-4SFP10-CU0-5 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 QSFP-4SFP10-CU0-5?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.

Volume Pricing for QSFP-4SFP10-CU0-5

Similar Products

From the Same Series as QSFP-4SFP10-CU0-5

Other parts that share the QSFP series prefix — useful when sourcing matched lots, hot-spare pools, or capacity-tier expansions.

  • QSFP — Dell QSFP+ + AFBR-79EEPZ-FT1 + 40GBase-ESR Transceiver Module — $187.33
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  • QSFP-100G-CWDM4 — QSFP-100G-CWDM4 - Arista 100Gbps 100GBase-CWDM4 Single-mode Fiber 2km 1310nm Duplex LC Connector QSFP28 Transceiver Module — $427.37
  • QSFP-100G-CWDM4-S — QSFP-100G-CWDM4-S - Cisco 100Gb/s 100GBase-CWDM4 Single-Mode Fiber 2km 1330nm Duplex LC Connector QSFP Transceiver Module — $1,079.46
  • QSFP-100G-LR4 — QSFP-100G-LR4 - Arista 100Gbps 100GBase-LR4 Single-mode Fiber 10km 1310nm Duplex LC Connector QSFP28 Transceiver Module — $397.89
  • QSFP-100G-LR4-S — QSFP-100G-LR4-S - Cisco 100Gb/s 100GBase-LR4 Single-Mode Fiber 10km 1310nm Duplex LC Connector QSFP Transceiver Module — $1,789.47
  • QSFP-100G-PSM4 — QSFP-100G-PSM4 - Arista 100Gbps 100GBase-PSM4 Single-mode Fiber 500m 1310nm MPO-12 Connector QSFP28 Transceiver Module — $1,418.79
  • QSFP-100G-PSM4-S — QSFP-100G-PSM4-S - Cisco Single-Mode 100Gbps 100GBase-PSM4 Fiber 500m 1310nm MPO-12 Connector QSFP Transceiver Module — $1,645.93
  • QSFP-100G-SM-SR — QSFP-100G-SM-SR - Cisco Single-Mode 100Gbps 100GBase-CWDM4 Fiber 2km 1310nm LC Connector QSFP Transceiver Module — $6,843.83
  • QSFP-100G-SR4 — QSFP-100G-SR4 - Arista 100Gbps 100GBase-SR4 Multi-mode Fiber 100m 850nm MPO-12 Connector QSFP28 Transceiver Module — $326.00
  • QSFP-100G-SR4-S — QSFP-100G-SR4-S - Cisco 100Gb/s 100GBase-SR4 Multi-Mode Fiber 100m 850nm MPO-12 Connector QSFP28 Transceiver Module — $64.46
  • QSFP-100G-SR4-S-AO — QSFP-100G-SR4-S-AO - Addonics 100Gbps 100GBase-SR4 Multi-mode Fiber 100m 850nm MPO-12 Connector QSFP28 Transceiver Module — $787.37

Pro Disk Network Buyer’s Guide: Network Ethernet Cables

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 QSFP-4SFP10-CU0-5 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 QSFP-4SFP10-CU0-5 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 QSFP-4SFP10-CU0-5 and the connected NICs support jumbo frames — some older NICs cap at 9000-byte payloads even when jumbo-enabled.

Related Categories

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Network switches, routers, firewalls, NICs, SFP and QSFP transceivers, DAC cables, wireless access points.

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