Replacement for QSFP-40GD-SX: Drop-In Alternatives We Stock
Looking for a replacement for the QSFP-40GD-SX (QSFP-40GD-SX - Gigatech MRV 40Gbps 40GBase-SR Multi-mode Fiber 150m 850nm QSFP+ Transceiver Module)? Pro Disk Network ships 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 QSFP-40GD-SX
| SKU | QSFP-40GD-SX |
|---|---|
| Product | QSFP-40GD-SX - Gigatech MRV 40Gbps 40GBase-SR Multi-mode Fiber 150m 850nm QSFP+ Transceiver Module |
| Current price | $359.66 |
| Stock status | In Stock |
| Detail page | View QSFP-40GD-SX › |
Drop-in replacements for QSFP-40GD-SX
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.
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
FTL410QE3C-FB - Finisar QSFP-40G-SR4 850nm 150m 40Gb/s Multi-Mode Fiber MTP/MPO QSFP+ Transceiver Module
SKU: FTL410QE3C-FB
Price: $125.86
GP-QSFP-40GE-1SR - Force10 40Gb/s 40GBase-X Multi-Mode Fiber 150m 850nm MPO Connector QSFP+ Transceiver Module
SKU: GP-QSFP-40GE-1SR
Price: $156.78
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
QSFP-40G-SR - Cisco 40Gb/s 40GBase-SR4 Multi-Mode Fiber 150m 850nm MPO Connector QSFP+ Transceiver Module
SKU: QSFP-40G-SR
Price: $172.16
QSFP-40G-SR4-RF - Cisco 40Gb/s 40GBase-SR4 Multi-Mode Fiber 150m 850nm MPO Connector QSFP+ Transceiver Module
SKU: QSFP-40G-SR4-RF
Price: $188.30
QSFP-40G-SR4-S-RF - Cisco Multi-Mode 40Gbps 40GBase-SR4 Fiber 150m 850nm MTP/MPO Connector QSFP+ Transceiver Module
SKU: QSFP-40G-SR4-S-RF
Price: $232.84
QSFP-40G-ISR4 - Huawei 40Gbps 40GBase-ISR4 Multi-mode Fiber 150m 850nm MPO Connector QSFP+ Optical Transceiver Module
SKU: QSFP-40G-ISR4
Price: $281.43
40GB-SR4-QSFP - Enterasys 40Gbps 40GBase-SR Multi-mode Fiber 150m 850nm QSFP+ Transceiver Module
SKU: 40GB-SR4-QSFP
Price: $505.45
QSFP-40G-SR-ACC - Accortec 40Gb/s 40GBase-SR4 Multi-Mode Fiber 150m 850nm MPO Connector QSFP+ Transceiver Module for Alcatel-Lucent Compatible
SKU: QSFP-40G-SR-ACC
Price: $660.95
40GB-SR4-QSFP-ACC - Accortec 40Gb/s 40GBase-SR4 Multi-Mode Fiber 150m 850nm MPO Connector QSFP+ Transceiver Module
SKU: 40GB-SR4-QSFP-ACC
Price: $725.33
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.