QDD-400G-LR4-S — Cisco 400GBASE-LR4 QSFP-DD Transceiver Module (SMF, 1310nm, 10km, Duplex LC)
MPN: QDD-400G-LR4-S|By: Cisco
Starting from
$3,180
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
Part number QDD-400G-LR4-S identifies this Cisco 400GBASE-LR4 QSFP-DD Transceiver Module (SMF, 1310nm, 10km, duplex LC). Optics have to match at both ends and are frequently vendor-coded, so a module that is electrically correct can still refuse to link. This is 400GBASE-LR4. Tell us both switch models and we will confirm compatibility before it ships.
Priced per unit, with tiered pricing at quantity — send the number you need and we will come back with the banded price.
Featuring
- Optical Standard
- 400GBASE-LR4
- Manufacturer
- Cisco
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.
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 Cisco QDD-400G-LR4-S is deployed
- Swapping out a failed transceiver for QDD-400G-LR4-S under change control
- Holding spare optics against a link-level SLA
- Replacing an optic that has started erroring
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 QDD-400G-LR4-S, not against a description of it, so there is no room for a substitution you did not agree to.
Compatibility checked
We confirm the part is supported on your platform before it ships, rather than leaving the check to you.
Volume pricing
The listed price is per unit; tiered pricing applies at quantity and purchase orders are accepted.
Questions buyers ask about this part
- Is QDD-400G-LR4-S 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 QDD-400G-LR4-S 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 — POs from qualified organisations, net terms on approval, and banded pricing once the quantity is worth banding. Send the number and we will price it properly.
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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.