The SFP-SDB-GE-S40K-C is a 1.25G SFP (Small Form-factor Pluggable) transceiver manufactured by APPROVED TECHNOLOGY. This transceiver is designed for single-mode fiber optic cables and operates at a wavelength of 1310nm. It supports data transmission distances of up to 40km, making it suitable for long-distance Gigabit Ethernet applications. Supreme Components International is an authorised distributor of APPROVED TECHNOLOGY, ensuring you receive a genuine and reliable component. This SFP module is hot-pluggable, allowing for easy installation and replacement without interrupting network traffic. It is commonly used in switches, routers, and other networking equipment to provide high-speed data connectivity over long distances. The SFP-SDB-GE-S40K-C offers a cost-effective solution for extending network reach and improving network performance.