Cisco QSFP-40G-ER4
QSFP+ transceiver module - 40 Gigabit LAN

Key facts
- Part number
- QSFP-40G-ER4
- Brand
- Cisco
- Category
- Transceivers
- Price
- AUD 3,999 from Prology AU (refurbished)USD 2,838 from Prology US (refurbished)
- Availability
- Prology AU: Refurbished · in stock
- Prology US: Refurbished · in stock
Overview
The Cisco QSFP-40G-ER4 transceiver module represents a significant advancement in networking technology, offering both high-speed data transfer capabilities and extended reach for comprehensive network solutions. With a maximum operating temperature range from 0 °C to 70 °C, it ensures reliable performance under various environmental conditions. This module is designed to support the demanding requirements of Gigabit Ethernet networks, featuring a data transfer rate of 40 Gbps and compatibility with LC single-mode connectors. Its low power consumption of 3.5 W not only makes it an energy-efficient choice but also contributes to lower operational costs. Compliant with MSA SFF-8436, IEEE 802.3ba, and ITU-T G.652 standards, the Cisco QSFP+ module is a versatile solution that enhances connectivity and network efficiency, making it an ideal choice for businesses looking to upgrade their network infrastructure.
Reference price history
Recorded reference and list prices over time. Not Prology selling prices.
- Latest
- USD 44,237.54≈ AUD 62,995
- Apr 2025
- Lowest recorded
- USD 37,495≈ AUD 53,393
- Highest recorded
- USD 44,352.28≈ AUD 63,158
- Recorded
- 2015 – 2025
- 23 price points
- List price
- Prology US
AUD 3,999 on Prology AU, recorded
Buy or sell Cisco QSFP-40G-ER4
Buying Cisco transceivers
Prology stocks the Cisco QSFP-40G-ER4 from USD 2,838 on Prology AU and Prology US. Need more than one, or a different condition? Request a quote for volume pricing.
Selling Cisco transceivers
Have a spare or decommissioned QSFP-40G-ER4? Prology buys used and surplus Cisco transceivers — single units or whole lots — and replies with an offer within 1 business day. Sell your QSFP-40G-ER4.
- What is the Cisco QSFP-40G-ER4?
- The Cisco QSFP-40G-ER4 is a Cisco transceiver – QSFP+ transceiver module - 40 Gigabit LAN.
- How much does the Cisco QSFP-40G-ER4 cost?
- The manufacturer list price on record is USD 44,237.54 (Apr 2025). It is a reference figure, not a selling price — the live price is on the Prology store page.
- Where can I buy the Cisco QSFP-40G-ER4?
- It is listed on Prology AU and Prology US. Use the “View on Prology” button above for live price, condition and stock, or request a quote for volume pricing.
- Can I sell a used Cisco QSFP-40G-ER4?
- Yes. Prology buys used and surplus Cisco transceivers, including the QSFP-40G-ER4. Get an offer — sell outright or trade in against your next order.
Request a quote for QSFP-40G-ER4
Tell us the quantity and condition you need. Prology replies with a firm price and lead time within 1 business day.