QSFPP-40GBASE-LR4 — Juniper 40GBASE-LR4 QSFP+ Transceiver (40Gbps, 1310nm SMF, 10km, Duplex LC)
MPN: QSFPP-40GBASE-LR4|By: Juniper

Starting from
$3,360
Indicative — final pricing confirmed with your quote.
In Stockships worldwide
- Condition:
- New — authorized channel
- Warranty:
- Full manufacturer warranty
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Product overview
QSFPP-40GBASE-LR4 is a Juniper 40GBASE-LR4 QSFP+ Transceiver (40Gbps, 1310nm SMF, 10km, duplex LC). 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.
Featuring
- Optical Standard
- 40GBASE-LR4
- Manufacturer
- Juniper
Interfaces / Ports
- Connector
- LC
Physical characteristics
- Transceiver Type
- LR4
- 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.
These are the 5 facts we can state about QSFPP-40GBASE-LR4 without inferring anything. Compatibility beyond this is confirmed per platform, on request, before you order.
Where the Juniper QSFPP-40GBASE-LR4 is deployed
- Like-for-like replacement of QSFPP-40GBASE-LR4 in an existing system
- Replacing an optic that has started erroring
- Bringing up a new link between two existing switches
Who this part is for
- Procurement buying optics in quantity for a scheduled build
- MSPs holding spare optics against a customer SLA
- Integrators supplying the passive layer with a switch order
What you get ordering this from us
Ordered by part number
QSFPP-40GBASE-LR4 is what is quoted and QSFPP-40GBASE-LR4 is what ships; where an alternate code is genuinely the same part we name it rather than swap it silently.
Answered by a human
A quote comes back with the reasoning attached, including the cases where we think you should buy something else.
Compatibility checked
We confirm the part is supported on your platform before it ships, rather than leaving the check to you.
Questions buyers ask about this part
- Is QSFPP-40GBASE-LR4 genuine and is the warranty intact?
- Yes. It ships new in Juniper 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 QSFPP-40GBASE-LR4 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.
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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.
