• Dell QSAQ28-S28-BCC 100G to 25G SFP adapter with silver fiber optic connector
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Blue Cable Co

QSAQ28-S28-BCC | Dell Compatible 100G to 25G SFP Adapter

QSAQ28-S28-BCC

Stock Status: Enquire

$148.50 inc. GST
$135.00 ex. GST
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Description

The QSAQ28-S28-BCC is a drop-in compatible replacement for the Dell QSAQ28-S28 and 407-BBZL adapter modules. This hot-pluggable adapter enables 25GB SFP28 or 10GB SFP+ transceivers and cables to operate in 100GB QSFP28 ports on Dell networking switches, providing a cost-effective migration path for mixed-speed deployments. - QSFP28 MSA SFF-8665 and SFP28 MSA SFF-8402 compliance guarantees electrical and physical interoperability across Dell platforms - Converts a single 100GB QSFP28 port to accept one 25GB SFP28 or 10GB SFP+ module or cable using lane 1 of the QSFP28 interface - DDM/DOM pass-through support provides real-time monitoring of inserted SFP28 transceiver temperature, optical power, bias current, and voltage - Maximum power consumption of 0.5W enables high-density deployments without thermal constraints - Available as Dell QSAQ28-S28 or 407-BBZL reference SKU equivalents to match existing procurement workflows - Supports data rates from 10.3125 Gbps to 25.78125 Gbps for 10GB and 25GB Ethernet applications

Features

• QSFP28 MSA SFF-8665 compliance on the host side and SFP28 MSA SFF-8402 compliance on the module side guarantee electrical signal integrity and mechanical fit across Dell PowerSwitch platforms
• Single-lane architecture uses lane 1 of the QSFP28 interface to carry 25GB or 10GB traffic, leaving the remaining three lanes inactive to preserve port availability on adjacent QSFP28 ports
• DDM/DOM pass-through architecture routes I2C communication from the host QSFP28 interface directly to the inserted SFP28 module, enabling network management systems to read real-time diagnostic data without separate configuration
• 0.5W maximum power consumption (adapter only) supports high-density switch deployments where thermal budgets limit total power dissipation across all ports
• Hot-pluggable design with no configuration requirement allows adapters to be inserted or removed without switch reboot or port shutdown, simplifying field upgrades and troubleshooting
• IEEE 802.3by and IEEE 802.3ae standards compliance ensures interoperability with both 25GBASE-SR/LR SFP28 and 10GBASE-SR/LR SFP+ modules, supporting mixed-speed migration scenarios in data center leaf-spine architectures

Warranty

5-Year Advanced Warranty on All Blue Cable Co® Products

Blue Cable Co® offers a comprehensive 5-Year Advanced Warranty on all our branded products. Our advanced warranty ensures fast, hassle-free replacements to keep your network running smoothly. If a fault occurs, we"ll deliver a replacement part before you return the faulty item,minimising downtime and giving you complete peace of mind.

Choose Blue Cable Co® for reliable, high-quality network components backed by industry-leading warranty support.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Compatible SFP Selector

Technical Specifications

Brand: Blue Cable Co
BCC SKU: QSAQ28-S28-BCC
Compatible Replacement For: QSAQ28-S28, 407-BBZL
Compatibility: Dell compatible
Lab Testing: Tested in Sydney, Australia
Warranty: 5-year advanced hardware replacement (Blue Cable Co)
Form Factor: QSFP28 host side, SFP28 receptacle
Data Rate: 10.3125 Gbps to 25.78125 Gbps (supports 10GB and 25GB Ethernet)
Connector Type: QSFP28 plug, SFP28 receptacle
Standards: QSFP28 MSA SFF-8665, SFP28 MSA SFF-8402, IEEE 802.3by (25GBASE), IEEE 802.3ae (10GBASE)
DOM Support: Yes, full DDM/DOM pass-through from inserted SFP28 module
Operating Temperature: 0°C to 70°C (commercial)
Power Consumption: 0.5W maximum (adapter only, excluding inserted module)
Hot-Pluggable: Yes
Available Variants: QSAQ28-S28, 407-BBZL

FAQs

Q: Will this work in place of the Dell QSAQ28-S28 or 407-BBZL?
A: Yes. The QSAQ28-S28-BCC is designed as a direct replacement for both Dell QSAQ28-S28 and 407-BBZL adapter modules. It conforms to QSFP28 MSA SFF-8665 and SFP28 MSA SFF-8402 standards, providing the same QSFP28 form factor and SFP28 receptacle. The adapter is plug-and-play compatible with Dell PowerSwitch platforms and supports data rates from 10.3125 Gbps to 25.78125 Gbps for both 10GB and 25GB Ethernet applications.

Q: Which Dell switches support this adapter?
A: This adapter is compatible with Dell PowerSwitch platforms that have QSFP28 ports and support single-lane SFP28 or SFP+ operation. Compatible switch families include PowerSwitch S-Series, Z-Series, and MX-Series models with QSFP28 interfaces. The host switch must recognize the adapter and downshift the port to 25GB or 10GB operation. Consult Dell documentation for your specific switch model to confirm adapter support.

Q: Can I use any SFP28 or SFP+ transceiver in this adapter?
A: The adapter accepts any standards-compliant SFP28 (25GB) or SFP+ (10GB) transceiver, Direct Attach Copper cable, or Active Optical Cable that matches Dell coding requirements for your switch platform. The adapter routes lane 1 of the QSFP28 host interface to the inserted SFP28 module, supporting data rates from 10.3125 Gbps to 25.78125 Gbps. DDM/DOM parameters from the inserted module are passed through to the switch for monitoring.

Q: Does this adapter require breakout mode configuration on the switch?
A: No. Unlike QSFP28 breakout cables that split four lanes into separate ports, this adapter uses only lane 1 and does not require breakout mode. The switch treats the adapter as a single-lane device and downshifts the port speed to match the inserted SFP28 or SFP+ module. Other QSFP28 ports on the same ASIC remain available for full 100GB operation. No port configuration or interface subdivision is necessary.

Q: What happens to the other three QSFP28 lanes when using this adapter?
A: The adapter connects only lane 1 of the QSFP28 electrical interface to the SFP28 receptacle. Lanes 2, 3, and 4 remain electrically inactive and are not routed to any connector. This single-lane design means the adapter occupies one physical QSFP28 port but does not consume multiple switch ports or require lane splitting. The switch ASIC recognizes the adapter and disables the unused lanes automatically, leaving adjacent QSFP28 ports fully functional for independent 100GB or other speed operation.

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100% compatible with equipment from major vendors

Coded and tested in our state of the art lab in Sydney

Cisco sfp-10g-sr transceiver module with metallic housing and a white label displaying serial number, model details, and regulatory markings.
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Tested on real vendor hardware in Sydney

Every Blue Cable Co transceiver is coded for your platform and tested in our Sydney test rack on real vendor switches and firewalls before it ships. We check it is recognised and links up the same way the OEM optic does, so you don't find an "unsupported transceiver" error after it's installed.

Brands tested: Cisco, Meraki, Arista, Aruba, HPE, Juniper, Dell, Fortinet, Palo Alto, Check Point, Sophos, Moxa and NVIDIA. Speeds up to 100Gb.

  • 5 year replacement warranty
  • Sydney stock
  • Re-coding if you need it

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