855800-B21: HPE 25Gb SFP28 SR 100m LC transceiver
MPN: 855800-B21|By: HPE
Starting from
$300
Indicative. Final pricing is confirmed with your quote.
In Stockships worldwide
- Condition:
- New (authorized channel)
- Warranty:
- Full manufacturer warranty
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Bulk order? Request volume pricing
Authorized & warrantied
Sourced through authorized distribution, with the full manufacturer warranty.
Compatibility checked
Validated against your server platform before dispatch.
Delivery & lead time
Confirmed with your quote, including expedited freight where available.
Business & public sector
POs, net terms and volume pricing for qualified organizations, government and edu.
Product overview
855800-B21 is an HPE 25Gb SFP28 SR 100m LC Transceiver. Direct-attach copper is cheaper and lower latency than optics but is limited by length and by what each switch will accept. Tell us the two endpoints and we will say which of the two is right for the run.
Quotes are itemised down to the accessories, so nothing that is needed to make the part work is left off and discovered later.
Specifications
General
- Manufacturer part number
- 855800-B21
- Product Type
- Transceivers & Cables
- Manufacturer
- HPE
Technical specifications
- Capacity
- 25Gb
- Transceiver Type
- SR
Interfaces & connectivity
- Connector
- LC
The table below is what the transceiver is documented as, not what we have inferred from the part number. If the figure you need is missing, ask and we will source it from the manufacturer.
Where the HPE 855800-B21 is deployed
- Like-for-like replacement of 855800-B21 in an existing system
- Holding spare optics against a link-level SLA
- Cabling a new rack into an installed fabric
Who this part is for
- Network teams matching optics at both ends of an existing link
- Data centre teams cabling a new rack to an installed fabric
- MSPs holding spare optics against a customer SLA
What you get ordering this from us
Ordered by part number
The order is placed against 855800-B21, not against a description of it, so there is no room for a substitution you did not agree to.
Answered by a human
A quote comes back with the reasoning attached, including the cases where we think you should buy something else.
Coded for both ends
Tell us the switch at each end and we confirm the vendor coding before dispatch rather than after a link fails to come up.
Questions buyers ask about this part
Is 855800-B21 genuine and is the warranty intact?
Yes. Supplied new and unopened, so the manufacturer warranty and firmware update path stay supported. No grey-market stock and no refurbished units sold as new.
Will 855800-B21 work in my server?
Tell us the switch at both ends of the link. Optics are frequently vendor-coded, so a module that is electrically correct can still refuse to come up; we confirm the coding for both ends before it ships.
Do you accept purchase orders and quote at volume?
Yes. We quote against a purchase order and hold the price for the quote period, with tiered rates at quantity. Net terms are available once the account is approved.
Compare other Transceivers & Cables we stock
| Model | Brand | Key spec | Availability | From |
|---|---|---|---|---|
| 10G SFP+ SR 850nm 300m Optical Transceiver Module | NVIDIA Networking | Speed: 10Gb/s | In Stock | $40 |
| Cisco 1G SFP SX 850nm Optical Transceiver Module | Cisco | Speed: 1Gb/s | In Stock | $60 |
| Arista 1G SFP SX 850nm Optical Transceiver Module | Arista | Speed: 1Gb/s | In Stock | $50 |
| Juniper 1G SFP SX 850nm Optical Transceiver Module | Juniper | Speed: 1Gb/s | In Stock | $50 |
| Dell Technologies 1G SFP SX 850nm Optical Transceiver Module | Dell Technologies | Speed: 1Gb/s | In Stock | $50 |
| Intel 1G SFP SX 850nm Optical Transceiver Module | Intel | Speed: 1Gb/s | In Stock | $45 |
Browse all Transceivers & Cables or everything we stock from HPE.
Specifying a system, not just the part?
Optics and cabling are part of the fabric spec on a cluster build, since both ends and the switch have to agree.