Which switches and NICs is it coded for?

It is coded for HPE equipment. HPE switches usually reject third-party coding, so send us your switch or adapter model and we will confirm fit before you order.

What speed and reach?

25GbE, 100m on OM4. 25GbE SFP28 SR. A faster module clocks down to the CPU and population limit.

Multimode or single-mode?

Multimode. It is a 25GBASE-SR module for OM3 or OM4 fibre, rated to 100m.

LC duplex multimode, the standard two-fibre connector used for short-reach optics.

Is it OEM-compatible?

HPE-coded; we can match other brands. Send us your server model and we will confirm fit before you order.

845398-B21 - HPE 845398-B21 25Gb SFP28 SR 100m Transceiver

Name: HPE 845398-B21 25Gb SFP28 SR 100m Transceiver
Brand: HPE
SKU: 845398-B21
Price: 180 USD
Availability: InStock

845398-B21 - HPE 845398-B21 25Gb SFP28 SR 100m Transceiver | US IT Hardware

Product overview

The HPE 845398-B21 is an HPE-coded SFP28 optical transceiver for 25GbE short-reach links up to 100m over multimode fibre, the module you pair with HPE 25G switch ports or adapters to run fibre in place of a DAC. It is an 850nm SR module with an LC duplex connector, coded so it is recognized and monitored correctly on HPE Aruba and ProLiant gear. What it's coded for: Coded for HPE switches and adapters. Use two per link with matching OM4 duplex fibre and LC connectors. For non-HPE gear, we match the correct coding.

HPE SFP28 transceiver for 25Gb connectivity
Short-range SR 100m optical classification
Enterprise-level HPE networking component
SKU 845398-B21 for precise identification
Fits 25GbE SR 100m transceiver category
Suited to structured 25Gb enterprise networks

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Maximum Distance
Manufacturer part #	845398-B21
Brand	HPE
Condition	New
Model	845398-B21
Reach	328 ft
Series	SFP28
Technology	25GbE
Description	25Gb SFP28 short-reach transceiver, 100 m
Cabling Type	25GBase-SR
Product Line	HPE 25Gb SFP28 SR 100m Transceiver
Product Type	Transceiver module

Compatible systems

HPE 845398-B21 is an Enterprise 25GbE SFP28 SR 100 m transceiver module.

HPE Ethernet 10/25Gb 2-port 640FLR-SFP28 Adapter
Model: 640FLR-SFP28 Adapter
Referenced as compatible transceiver option on HPE support page.

Condition

New and recertified.

Best for

Enterprise data centers
Suited to enterprise environments that standardize on HPE optics, the HPE 25Gb SFP28 SR 100m Transceiver 845398-B21 provides 25Gb short-range connectivity within the data hall.
Campus networks
Appropriate for campus network aggregation or distribution layers where 25Gb SFP28 SR 100m transceivers are used for short fiber runs between closets or intermediate locations.
Short-range rack-to-rack links
Designed as a 25Gb SFP28 SR 100m module, this transceiver fits deployments where rack-to-rack or row-to-row connections must remain within a 100 meter optical reach.
Standardized HPE optics environments
Ideal for organizations that require consistent HPE-branded SFP28 transceivers such as the 25Gb SFP28 SR 100m 845398-B21 across their enterprise infrastructure.

Details

Shipping, warranty & returns

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Media	multimode (OM4)
Coding	HPE
Connector	LC duplex
Interface	SFP28
Port Count	2 ports
Wavelength	850nm
Connector Type	LC multi-mode
Ethernet Speed	25 GbE

HPE 845398-B21 25Gb SFP28 SR 100m Transceiver