Replacement for QDD-4X100G-FR-S: Drop-In Alternatives We Stock
Looking for a replacement for the QDD-4X100G-FR-S (QDD-4X100G-FR-S - Cisco 2km 1310nm 400GBase-DR4+ MPO Single-mode QSFP-DD Transceiver)? Pro Disk Network ships Cisco drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the QDD-4X100G-FR-S
| SKU | QDD-4X100G-FR-S |
|---|---|
| Product | QDD-4X100G-FR-S - Cisco 2km 1310nm 400GBase-DR4+ MPO Single-mode QSFP-DD Transceiver |
| Stock status | In Stock |
| Detail page | View QDD-4X100G-FR-S › |
Drop-in replacements for QDD-4X100G-FR-S
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
QSFP-100G-PSM4-S - Cisco Single-Mode 100Gbps 100GBase-PSM4 Fiber 500m 1310nm MPO-12 Connector QSFP Transceiver Module
SKU: QSFP-100G-PSM4-S
Price: $1,645.93
QSFP-4X10G-LR-S - Cisco Single-Mode 40Gbps 10GBase-LR Fiber 10km 1310nm MTP/MPO Connector QSFP+ Transceiver Module
SKU: QSFP-4X10G-LR-S
Price: $1,986.01
QSFP-100G-SM-SR - Cisco Single-Mode 100Gbps 100GBase-CWDM4 Fiber 2km 1310nm LC Connector QSFP Transceiver Module
SKU: QSFP-100G-SM-SR
Price: $6,843.83
ONS-QSFP-4X10-MLR - Cisco Single-Mode 40Gbps 40GBase-LR Multi-rate Fiber 10km 1355nm MPO-12 Connector QSFP+ Transceiver Module
SKU: ONS-QSFP-4X10-MLR
Price: $2,315.79
10-3118-02 - Cisco Single-mode 40Gbps 10GBase-LR Fiber 10km 1310nm MPO Connector QSFP+ Transceiver Module
SKU: 10-3118-02
Price: $1,337.79
QSFP-100G-CWDM4-S - Cisco 100Gb/s 100GBase-CWDM4 Single-Mode Fiber 2km 1330nm Duplex LC Connector QSFP Transceiver Module
SKU: QSFP-100G-CWDM4-S
Price: $1,079.46
Cisco WSP-Q40GLR4L 40Gb/s 40GBase-LR4L Single-Mode Fiber 2km 1310nm Duplex LC Connector QSFP+ Transceiver Module Spare
SKU: WSP-Q40GLR4L
Price: $726.47
Cisco QSFP-40G-SR4 40Gb/s 40GBase-SR4 Multi-Mode Fiber 150m 850nm MPO Connector QSFP+ Transceiver Module Spare
SKU: QSFP-40G-SR4
Price: $63.14
10-2672-01 - Cisco Multi-mode QSFP-40G-SR4 850nm 150m 40Gb/s Fiber MTP/MPO QSFP+ Transceiver Module
SKU: 10-2672-01
Price: $79.66
QSFP-40G-CSR4 - Cisco 40Gb/s 40GBase-CSR4 Multi-Mode Fiber 400m 850nm MTP/MPO Connector QSFP+ Transceiver Module
SKU: QSFP-40G-CSR4
Price: $140.36
Cisco QSFP-40G-SR4-S Multi-Mode 40Gbps 40GBase-SR4 Fiber 150m 850nm MTP/MPO Connector QSFP+ Transceiver Module
SKU: QSFP-40G-SR4-S
Price: $164.11
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.