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The QSFP-40G-ER is a high-performance, cost-effective 40G transceiver module designed for long-distance communication. ETU-Link Technology Co., Ltd. is a leading supplier of this innovative product, known for its reliability and high-quality performance, The QSFP-40G-ER is designed to meet the increasing demand for high-speed data transmission in data centers and networking applications. It is capable of transmitting data over a distance of up to 40km, making it ideal for long-haul applications, This transceiver module supports both single-mode fiber and duplex LC connectors, providing greater flexibility for different network configurations. It also features low power consumption and high reliability, ensuring stable and efficient performance in demanding environments, ETU-Link Technology Co., Ltd. is committed to providing customers with the best-in-class optical transceivers, and the QSFP-40G-ER is a testament to that commitment. With its advanced features and reliable performance, this transceiver module is the perfect choice for high-speed, long-distance communication needs