FTLX8571D3BCL-NU: Finisar 10GBASE-SR SFP+ Transceiver Module (MMF, 850nm)
MPN: FTLX8571D3BCL-NU|By: Finisar

Starting from
$125
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
FTLX8571D3BCL-NU is a Finisar 10GBASE-SR SFP+ Transceiver Module (MMF, 850nm). 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.
Tell us the deadline you are working to and we will say whether it is achievable before you commit to it internally.
Specifications
General
- Manufacturer part number
- FTLX8571D3BCL-NU
- Product Type
- Transceivers & Cables
- Manufacturer
- Finisar
Technical specifications
- Transceiver Type
- SR
Interfaces & connectivity
- Optical Standard
- 10GBASE-SR
Published specifications for FTLX8571D3BCL-NU. Anything not listed here we will confirm against the manufacturer's documentation before quoting, because we would rather answer the question than let you assume.
Where the Finisar FTLX8571D3BCL-NU is deployed
- Sourcing FTLX8571D3BCL-NU against a build sheet that names it explicitly
- Bringing up a new link between two existing switches
- Holding spare optics against a link-level SLA
Who this part is for
- Data centre teams cabling a new rack to an installed fabric
- Procurement buying optics in quantity for a scheduled build
- Network teams matching optics at both ends of an existing link
What you get ordering this from us
Ordered by part number
FTLX8571D3BCL-NU is what is quoted and FTLX8571D3BCL-NU is what ships; where an alternate code is genuinely the same part we name it rather than swap it silently.
Volume pricing
The listed price is per unit; tiered pricing applies at quantity and purchase orders are accepted.
Answered by a human
A quote comes back with the reasoning attached, including the cases where we think you should buy something else.
Questions buyers ask about this part
Is FTLX8571D3BCL-NU 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 FTLX8571D3BCL-NU 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. Purchase orders are accepted from qualified organisations, net terms are available on approval, and tiered pricing applies at quantity. Tell us how many you need.
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 |
| HPE 1G SFP SX 850nm Optical Transceiver Module | HPE | Speed: 1Gb/s | In Stock | $50 |
| Dell Technologies 1G SFP SX 850nm Optical Transceiver Module | Dell Technologies | Speed: 1Gb/s | In Stock | $50 |
Browse all Transceivers & Cables or everything we stock from Finisar.
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.
