Description
Cisco QSFP-40G-SR4 Transceiver Module
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| Specification | Description |
|---|---|
| Type | QSFP+ (Quad Small Form-Factor Pluggable Plus) |
| Data Rate | 40 Gigabit Ethernet (GbE) |
| Fiber Type | Multimode Fiber (OM3, OM4, or OM5 laser-optimized) |
| Wavelength | 850 nm |
| Maximum Reach | 100 meters (OM3) |
| Maximum Reach | 150 meters (OM4/OM5) |
| Connector | MTP/MPO (12-fiber parallel) |
Description:
The Cisco QSFP-40G-SR4 Transceiver Module is a hot-swappable input/output (I/O) device that enables high-bandwidth data transmission over short distances using multimode fiber optic cables. It supports 40 Gigabit Ethernet (GbE) connections with a maximum reach of 100 meters on OM3 fiber or 150 meters on OM4/OM5 fiber.
The transceiver module uses four lasers and four receivers, transmitting and receiving data on separate wavelengths over the same fiber optic cable. This parallel transmission method allows for high-speed data transfer while maintaining signal integrity.
The Cisco QSFP-40G-SR4 is commonly used in data center applications, high-performance computing networks, enterprise core and distribution layers, and service provider transport applications. It provides a cost-effective solution for short-distance, high-bandwidth connections within a data center or enterprise network.
Additional points to consider:
Cisco also offers compatible versions of this transceiver module from third-party manufacturers, which may be a more cost-effective option.
When choosing a transceiver module, it’s important to ensure compatibility with your specific Cisco networking equipment.
MTP/MPO connectors are required for use with Cisco QSFP-40G-SR4 transceivers. These connectors are designed for 12-fiber parallel transmission.

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