40GBASE-LR4

40GBASE-LR4 is a networking standard used for high-speed data transmission over long distances. It allows a single optical fiber to carry 40 gigabits of data per second, which is essential for data centers and enterprise networks. The "LR4" designation indicates it uses long-reach four-laser technology, enabling data to travel up to approximately 10 kilometers (about 6 miles). This standard combines multiple signals into one fiber, optimizing infrastructure while providing reliable, high-capacity connections over long spans.