Cisco CPAK-100G-PSM4 100G CPAK Transceiver, 500 m SMF | Parallel Optics — CPAK-100G-PSM4

Keep 100 GbE links stable across short-reach single-mode runs with Cisco’s CPAK-100G-PSM4 transceiver. Designed for parallel optics over SMF, it supports up to 500 m, making it a strong fit for data center interconnects where predictable reach matters more than overbuying long-haul capability. The CPAK form factor is built for Cisco platforms that need high-speed connectivity without sacrificing port density. Parallel transmission helps move 100 GbE traffic efficiently across fiber infrastructure already standardized on single-mode cabling. That makes this module a practical choice for teams refreJTFng uplinks, expanding leaf-spine fabrics, or replacing lower-speed optics in controlled-distance environments. For buyers comparing price points, the value is in fit and certainty: Cisco compatibility, 100 GbE throughput, and a reach profile aligned to common data center layouts. When the design target is clean integration and dependable short-range performance, this module delivers exactly that—no extra features, no wasted budget. Ideal For 100 GbE uplinks between leaf and spine switches in a data center Short-reach single-mode fiber connections across adjacent network rooms High-density Cisco switching deployments requiring parallel 100G optics Fabric upgrades from lower-speed links to 100 GbE over SMF Why This Product 1 100 GbE throughput for high-speed uplinks 2 500 m reach on single-mode fiber 3 Parallel optics for short-reach density 4 CPAK form factor for Cisco platforms