Transceivers & optics

Cisco QDD-400G-FR4-S 400GBASE-FR4 QSFP-DD Transceiver

Name: Cisco QDD-400G-FR4-S 400GBASE-FR4 QSFP-DD Transceiver
Brand: Cisco
SKU: QDD-400G-FR4-S

SKU QDD-400G-FR4-S · New

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Government Purchase Card (GPC) accepted
Authorized Cisco partner, genuine warrantied hardware
TAA-compliant & DoDIN APL procurement paths
No payment up front, we confirm stock & final total

Overview

The Cisco QDD-400G-FR4-S is a 400 Gigabit Ethernet QSFP-DD transceiver that carries four CWDM wavelengths over a single duplex LC single-mode fiber pair, reaching up to 2km. It targets medium-reach 400G connections between data center halls, buildings, and aggregation points where duplex LC plant is already in place. The module is hot-swappable, standards compliant, and supports digital diagnostics. Genuine Cisco hardware sourced through an authorized partner.

Highlights

400GBASE-FR4 over duplex single-mode fiber, LC connector, up to 2km
Four CWDM lanes (PAM4, ~1271-1331nm) multiplexed onto one duplex LC pair
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 Cisco QDD-400G-FR4-S 400GBASE-FR4 QSFP-DD Transceiver datasheet & specifications

Optical

Standard: 400GBASE-FR4
Form factor: QSFP-DD
Connector: Duplex LC
Fiber / wavelength: SMF, CWDM 1271/1291/1311/1331nm
Max reach: 2km

Operating

Data rate: 400 Gbps (4x 100G PAM4)
DOM: Yes

Frequently asked questions

How much does the Cisco QDD-400G-FR4-S 400GBASE-FR4 QSFP-DD Transceiver (QDD-400G-FR4-S) cost?

Pricing for the QDD-400G-FR4-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-FR4-S TAA compliant and available for government and DoD buyers?

Yes. Uniqcli is an authorized Cisco partner and supports TAA-compliant, DoDIN APL-ready procurement of the QDD-400G-FR4-S for US federal, DoD, state, local, education, healthcare, and enterprise buyers. We accept the Government Purchase Card (GPC) and can support FAR-based urgent and emergency acquisitions.

Can I buy the QDD-400G-FR4-S as a single unit or in volume?

Both. Order a single QDD-400G-FR4-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-FR4-S datasheet and specifications?

The official Cisco datasheet is available on this page (open the gated datasheet for the full PDF), and the Tech Specs section lists ports, power draw, dimensions, and licensing for the QDD-400G-FR4-S.