QSFP-100G-PSM4

The Arista QSFP-100G-PSM4 module is designed for high-speed data transmission using parallel single-mode fiber connections. It works by splitting 100 Gbps data streams into four separate 25 Gbps lanes, enabling long-distance communication up to 500 meters. This type of module is commonly used in data centers and enterprise networks where high bandwidth and extended reach are essential.

Built for network engineers and IT professionals, it fits well in environments requiring reliable 100 Gigabit Ethernet connections between switches or within fiber optic infrastructure. The module's compact QSFP form factor helps maintain dense port counts while delivering consistent performance.

Key Features

• Four parallel 25 Gbps lanes combine to achieve 100 Gbps throughput
• Transmission distance of up to 500 meters over parallel SMF
• Compatible with QSFP ports on Arista and other standards-based switches
• Low power consumption suitable for dense networking setups
• Reliable signal integrity for data center interconnects

Typically deployed in data centers linking top-of-rack and spine switches, this module supports high-speed backbone connections without requiring complex cabling. It helps maintain seamless data flow in environments with heavy traffic and demanding latency requirements.

Its role extends to enterprise networks that need scalable 100G links with efficient fiber optic usage. Overall, it offers a stable and straightforward way to achieve high bandwidth over moderate distances in fiber-based network architectures.