# Arista 40 Gigabit Ethernet QSFP+

# Introduction to 40G Ethernet transceivers

40G Ethernet transceivers are essential components in high-speed networking. These devices enable fast data transfer and improve network performance significantly. They are widely used in data centers, telecommunications, and enterprise networks.

## Types of 40G Ethernet transceivers

Several types of 40G Ethernet transceivers are available, including QSFP+, CFP, and CXP modules. Each type is designed to fit specific applications and hardware interfaces. Selecting the right transceiver ensures optimal performance and compatibility.

### Applications of 40G Ethernet transceivers

40G Ethernet transceivers support the increasing demand for bandwidth in cloud computing and storage networking. They deliver reliable gigabit speeds required for video streaming and large file transfers. These transceivers provide a cost-effective solution for upgrading network infrastructure.

Type

Interface

Distance

QSFP+

MPO/MTP

Up to 100m

CFP

LC

Up to 10km

CXP

MPO

Up to 300m

## Understanding Related Technologies

These transceivers are compatible with various network protocols and standards. They support multiple gigabit Ethernet speeds, ensuring versatility in deployment. The optical design of SFP modules complements the robust architecture of 40G Ethernet transceivers.

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### Installation Tips for Optimal Performance

Proper installation is critical to maintaining the performance of 40G Ethernet transceivers. Clean connectors and correct cabling reduce signal loss. Regular checks and maintenance prolong the lifespan of the equipment.

![Diagram of 40G Ethernet transceiver](images/40g_ethernet_transceiver_diagram.jpg)

Overall, the impact of 40G Ethernet transceivers in modern networks is profound. They enable the gigabit speeds necessary for growing data requirements. As technology evolves, these transceivers will continue to be key players in network advancement.

## Details

- **Price:** 109.99 USD - 5546.99 USD
- **Vendor:** Arista
- **Type:** Repeaters & Transceivers
- **Tags:** New

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| QSFP-40G-SR4 | 109.99 USD | In stock |
| QSFP-40G-XSR4 | 142.99 USD | In stock |
| QSFP-40G-BIDI | 1967.99 USD | In stock |
| QSFP-40G-UNIV | 142.99 USD | In stock |
| QSFP-40G-LR4 | 274.99 USD | In stock |
| QSFP-40G-LRL4 | 153.99 USD | In stock |
| QSFP-40G-PLRL4 | 197.99 USD | In stock |
| QSFP-40G-ER4 | 5546.99 USD | In stock |

## Images

- Arista background

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> Source: [Optdex](https://www.optdex.com/products/40g-ethernet-transceivers)
> Updated: 2026-09-21