Startech MSA Uncoded Compatible QSFP+ Module, 40GBASE-SR4, 40Gbps Multi Mode (MMF) Fiber, 40GE Gigabit Ethernet QSFP+, MPO Connector, 300m, 850nm, 40GbE QSFP Plus Transceiver Module
Lifetime Warranty (QSFP-40G-ESR4-ST) | QSFP+ transceiver module | 40GbE | 40GBASE-SR4 | MPO multi-mode | up to 300 m | 850 nm
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Main Specification
| Product Description | Startech MSA Uncoded Compatible QSFP+ Module, 40GBASE-SR4, 40Gbps Multi Mode (MMF) Fiber, 40GE Gigabit Ethernet QSFP+, MPO Connector, 300m, 850nm, 40GbE QSFP Plus Transceiver Module - Lifetime Warranty (QSFP-40G-ESR4-ST) - QSFP+ transceiver module - 40GbE |
|---|---|
| Device Type | QSFP+ transceiver module - MPO multi-mode |
| Form Factor | Plug-in module |
| Cabling Type | 40GBASE-SR4 |
| Data Transfer Rate | 40 Gbps |
| Optical Wave Length | 850 nm |
| Data Link Protocol | 40GbE |
| Max Transfer Distance | 300 m |
| Dimensions (WxDxH) | 12.2 cm x 1.86 cm x 0.85 cm |
| Weight | 37.5 g |
| Manufacturer Warranty | Limited lifetime warranty |
General
| Device Type | QSFP+ transceiver module |
|---|---|
| Form Factor | Plug-in module |
Networking
| Connectivity Technology | Wired |
|---|---|
| Cabling Type | 40GBASE-SR4 |
| Data Link Protocol | 40GbE |
| Data Transfer Rate | 40 Gbps |
| Optical Wave Length | 850 nm |
| Max Transfer Distance | 300 m |
| Features | Digital Diagnostics Monitoring (DDM) |
Expansion / Connectivity
| Interfaces | 1 x Ethernet 40GBASE-SR4 - MPO multi-mode female |
|---|
Miscellaneous
| MTBF | 498,745,585 hours |
|---|---|
| Compliant Standards | UL, FCC, MSA |
Dimensions & Weight
| Width | 12.2 cm |
|---|---|
| Depth | 1.86 cm |
| Height | 0.85 cm |
| Weight | 37.5 g |
Dimensions & Weight (Shipping)
| Shipping Width | 9.2 cm |
|---|---|
| Shipping Depth | 11.7 cm |
| Shipping Height | 3.4 cm |
| Shipping Weight | 75 g |
Manufacturer Warranty
| Service & Support | Limited warranty - lifetime |
|---|
Key selling points
- Delivers reliable 40 GbE connections for 40GBase-SR4 compliant networks
- StarTech.com SFP modules are backed by a lifetime warranty
- Complies with Multi-Source Agreement (MSA) industry standards
References
MPN: QSFP-40G-ESR4-ST
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04/06/2026 05:55:52