Local host
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Network TransceiverCheck both ends of the link
HPE Networking 100GB QSFP28 Bidirectional Transceiver — 845972-B21. Network Transceiver. Ask for current pricing and help choosing the right configuration.
Tell us the configuration, quantity and destination. Your quotation will show availability, condition, warranty and delivery terms.
Start an order requestHPE / PRODUCT DETAILS
Select an optic as part of a complete link: host port, optical standard, fiber plant and remote transceiver.
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Confirm the host port, software release and transceiver qualification.
Match wavelength, fiber type, connectors and the optical loss budget.
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For paired or bidirectional links, confirm the complementary remote optic.
Enter both endpoints so we can check the connection.
Add endpoints to your request →HPE / ORDER & INSTALLATION DETAILS
Keep the system SKU, option P/N and spare P/N distinct.
Check the chassis generation and original HPE installation kits.
Separate factory hardware, optional management software and support.
Technical overview
Use the full part number when comparing options or asking about system fit.
| Manufacturer | HPE |
|---|---|
| Product model | 845972-B21 |
| Manufacturer P/N | 845972-B21 |
| Model | 845972-B21 |
| Host cage | Exact device and port mode |
| Optical module | Complete module identifier |
| Fiber and peer | Connector, route and receiving endpoint |
HOW THIS PRODUCT FITS YOUR NETWORK
Choose how you plan to use this product.
Confirm the host port, software release and transceiver qualification.
845972-B21: check host port qualification and coding.
This sketch helps describe your request. We will confirm protocols, port counts, coverage and failover when quoting.
YOUR QUOTE REQUEST
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Keep the original manufacturer identity and full option or spare number. Include the host generation and any existing service or management entitlement.
SUPPORT & REPLACEMENT
Check support dates, replacement options and whether continued use still makes sense.
We do not have confirmed sales and support dates for this part number.
Send us the full 845972-B21 order code, software release and support details before planning long-term use.
Ask us to check the current sales and support statusProducts with similar names or connectors may still be incompatible. Compare the full specifications, installed system and software requirements.
Compare related products These products may be related, but we have not confirmed them as replacements.USING HARDWARE RESPONSIBLY
Consider repairability, remaining support and actual operating demand. Extending service life is useful only when the equipment still meets your security and reliability requirements.
Use measured average input power for the same workload. PSU ratings and processor TDP are different from total system power.
Energy difference = (current W − proposed W) × hours × units ÷ 1,000. Excludes cooling, embodied emissions and purchase costs.CONNECTION DETAILS
Match both endpoints before selecting this cable or transceiver. Connector shape and nominal speed alone do not establish interoperability.
Browse the categories above for related equipment, then send us the full configuration so we can check the fit.
PRODUCT DETAILS
| Manufacturer | HPE |
|---|---|
| Product model | 845972-B21 |
| Manufacturer P/N | 845972-B21 |
HPE / order paths
| Option P/N | Requested upgrade or option-kit identity |
|---|---|
| Spare P/N | Service-replacement identifier from the installed item |
| System SKU | Base or configured system to which the requirement belongs |
Optical transceiver selection
| Host and module | Device model, port and exact transceiver P/N | Identifies the supported host/module combination. |
|---|---|---|
| Fiber path | Fiber type, connector, reach requirement and patching | Defines the optical-path information to verify. |
| Peer endpoint | Remote device, optic and required link mode | Sets the matching standard and interoperability review. |
These images are preserved from the earlier page. Their exact product identity and origin have not been verified in this product review. They are not presented as accurate photographs of the named model or as available inventory.
HPE Networking 100GB QSFP28 Bidirectional Transceiver. HPE ordering identifier: 845972-B21.
Match the exact module or line-card part number to the supported chassis, slot type and hardware revision.
Check port type, protocol, connector and the required cables or optics. Similar physical connectors do not confirm interoperability.
Confirm slot power, airflow, firmware, drivers and any feature entitlement required by the host platform.
Review the installed chassis and slot population before adding a module.
Plan the required media, peer-device compatibility and software support for each connection.
Capture the installed part number and revision so the replacement matches the supported service configuration.
Explore the relevant category and review each exact product separately. Category links do not confirm compatibility or equivalence.
HPE Networking 100GB QSFP28 Bidirectional Transceiver. HPE ordering identifier: 845972-B21.
Match the exact module or line-card part number to the supported chassis, slot type and hardware revision. Check port type, protocol, connector and the required cables or optics. Similar physical connectors do not confirm interoperability.
Provide the full manufacturer part number, product label, revision and host or deployment context. Include required cables, brackets, carriers or installation accessories as separate order lines. Include the required quantity and delivery destination.
No. Archived images are retained from the earlier page for reference only. They are not proof of the model, inventory, condition or delivered configuration. Request identification photographs for the actual offered item.
01 / Application planning
Match the option, spare or assembly number and the relevant hardware revision.
Review the host, connectors, physical fit and dependencies as one configuration.
Keep quantities, included kits and target systems attached to each BOM line.
02 / Inspection & testing
Agree the inspection and test scope for the offered condition before confirming the order.
03 / Packing & international delivery
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Protect
Specify packing around the component, its sensitivity and the quantity ordered.
Prepare
Select packing suitable for the hardware, combined order and transport route.
Deliver
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Send the country, postal code, requested date and receiving restrictions with your enquiry. Packing, freight and delivery timing are confirmed in the written quotation.
Shipping guide ↗04 / Warranty & after-sales
Keep the warranty terms with the part number and supplied condition. The quotation or order defines the applicable coverage for your item.
Warranty & RMA guide ↗Include the product label, order reference and a description of the fault.
Provide the requested identification and diagnostic details.
Agree the authorized next step before shipping a return.
Repair, replacement or other remedies depend on the agreed warranty terms and the fault assessment.
Prepare the next step
Include quantities, destination, test evidence and warranty requirements.
Model selection & order planning
HPE Networking 100GB QSFP28 Bidirectional Transceiver — 845972-B21
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Tell us the host model, generation, installed configuration and required supporting hardware.
Specify condition, testing requirements, destination and requested delivery date.
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