SFN8542-PLUS — Solarflare Flareon Ultra Dual Port 40GbE QSFP+ PCIe Server Adapter
MPN: SFN8542-PLUS|By: Solarflare

Starting from
$655
Indicative — final pricing confirmed with your quote.
In Stockships worldwide
- Condition:
- New — authorized channel
- Warranty:
- Full manufacturer warranty
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Bulk order? Request volume pricing
Product overview
This is the Solarflare flareon ultra dual port 40GbE QSFP+ PCIe Server Adapter, order code SFN8542-PLUS. 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.
Ask for the datasheet and firmware notes with the quote; we would rather you check our claim than take it.
Featuring
- Manufacturer
- Solarflare
Interfaces / Ports
- Drive Interface
- PCIe
- Port Speed
- 40GbE
Physical characteristics
- Product Type
- Transceivers & Cables
- Expedited shipping options are available — rates confirmed with your quote.
- Purchase orders accepted from qualified institutions.
- Compatibility is validated against your server platform before dispatch. Send us the model and we will confirm support.
Specifications for SFN8542-PLUS as published by Solarflare. Where a value is absent it is because we could not verify it, not because it does not exist — ask and we will check.
Where the Solarflare SFN8542-PLUS is deployed
- Swapping out a failed transceiver for SFN8542-PLUS under change control
- Bringing up a new link between two existing switches
- Cabling a new rack into an installed fabric
Who this part is for
- Integrators supplying the passive layer with a switch order
- Procurement buying optics in quantity for a scheduled build
- Data centre teams cabling a new rack to an installed fabric
What you get ordering this from us
Ordered by part number
The order is placed against SFN8542-PLUS, not against a description of it, so there is no room for a substitution you did not agree to.
No substitutions without asking
If we cannot supply the exact code we tell you what we can supply and why, rather than shipping an equivalent and letting you find out.
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 SFN8542-PLUS genuine and is the warranty intact?
- Yes. It ships new in Solarflare packaging, which is what keeps the warranty and the firmware entitlement valid. Anything we cannot supply that way we tell you about before you order.
- Will SFN8542-PLUS 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
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Specifying a system, not just the part?
Optics and cabling are part of the fabric spec on a cluster build — both ends and the switch have to agree.
