Transceivers & optics
Cisco QDD-400G-LR4-S 400GBASE-LR4 QSFP-DD Transceiver
VPN# QDD-400G-LR4-S
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We confirm current pricing, stock, and lead time on request.
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- GPC accepted · Simplified Acquisition & FAR-based purchase orders
- Free US shipping over $2,500.00 · 30-day returns
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Overview
The Cisco QDD-400G-LR4-S is a 400 Gigabit Ethernet QSFP-DD transceiver that reaches up to 10km over a duplex LC single-mode fiber pair using four wavelengths. It addresses long-reach 400G requirements such as data center interconnect, metro aggregation, and inter-building backbones where extended single-mode distance is essential. The module is hot-swappable, standards compliant, and supports digital diagnostics. Genuine Cisco hardware sourced through an authorized partner.
Highlights
- 400GBASE-LR4 over duplex single-mode fiber, LC connector, up to 10km
- Four-wavelength PAM4 design for long-reach 400G spans
- Hot-swappable QSFP-DD with digital optical monitoring
- Genuine Cisco, authorized-partner sourced for warranty integrity
- TAA-compliant procurement path and Government Purchase Card (GPC) accepted
- Government Purchase Card (GPC) accepted
Cisco QDD-400G-LR4-S 400GBASE-LR4 QSFP-DD Transceiver datasheet and specifications
Optical
- Standard
- 400GBASE-LR4
- Form factor
- QSFP-DD
- Connector
- Duplex LC
- Fiber
- Single-mode (SMF)
- Max reach
- 10km
Operating
- Data rate
- 400 Gbps (4x 100G PAM4)
- DOM
- Yes
Frequently asked questions
How much does the Cisco QDD-400G-LR4-S 400GBASE-LR4 QSFP-DD Transceiver (QDD-400G-LR4-S) cost?
Pricing for the QDD-400G-LR4-S is available on request. Send a quick quote request and a Uniqcli specialist will confirm the current price, stock, and lead time, usually within one business day. Lower pricing is available for volume, GPC, and emergency-acquisition orders.
Is the QDD-400G-LR4-S TAA compliant and available for government and DoD buyers?
It depends on the unit. Cisco manufactures the QDD-400G-LR4-S in several countries, so Trade Agreements Act (TAA) status is decided per part number and production lot. Uniqcli is an authorized Cisco partner: where Cisco offers a TAA-designated version (usually a ++ part number) we quote that, we confirm the country of origin before shipment, and we attach a country-of-origin statement on request. That is how US federal, DoD, state, local, education, and healthcare buyers get an audit-ready file, with Government Purchase Card (GPC) acceptance and FAR-based urgent and emergency acquisition support. Request a TAA-compliant quote for the QDD-400G-LR4-S and a specialist will confirm the TAA option, price, and lead time, usually within one business day.
Can I buy the QDD-400G-LR4-S as a single unit or in volume?
Both. Order a single QDD-400G-LR4-S through the cart, or ask about lower pricing for volume orders, Government Purchase Card (GPC) purchases, and emergency or urgent (FAR-based) acquisitions. There is no payment up front: we confirm availability and the final total before invoicing.
Where can I find the QDD-400G-LR4-S datasheet and specifications?
The specifications section on this page lists the published specs for the QDD-400G-LR4-S, including ports, power, and dimensions where Cisco publishes them. Ask us for the full Cisco datasheet and we will send the current PDF with your quote.
Need the QDD-400G-LR4-S TAA-compliant for federal or DoD?
Cisco builds this model in multiple countries, so TAA status is decided per part number and production lot. Where Cisco offers a TAA-designated version (usually a ++ part number) we quote that, confirm the country of origin before shipment, and attach the paperwork. GPC-payable. Check the TAA line →
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