# Cisco: high-density fiber patch panel, MPO and breakout portfolio

> Manufacturer ordering information dated July 9, 2026 for one high-density panel family. Establishes that the 1RU chassis holds six cassettes and presents 72 duplex LC ports at the front against 18 MPO12 connectors at the rear, with 2RU and 4RU chassis at 144 and 288 duplex LC against 36 and 72 MPO12, and that the panels are 19-inch to 23-inch rack mountable. Establishes no port numbering order, no labeling scheme, no first cassette position, and does not state which positions within each ferrule a cassette uses. Checked September 16, 2026.

Canonical page: https://datacenterlabeling.com/references/s72

Original source: [Cisco: high-density fiber patch panel, MPO and breakout portfolio](https://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/high-density-fiber-patch-mpo-ds.html)

## Scope of this source

Manufacturer ordering information dated July 9, 2026 for one high-density panel family. Establishes that the 1RU chassis holds six cassettes and presents 72 duplex LC ports at the front against 18 MPO12 connectors at the rear, with 2RU and 4RU chassis at 144 and 288 duplex LC against 36 and 72 MPO12, and that the panels are 19-inch to 23-inch rack mountable. Establishes no port numbering order, no labeling scheme, no first cassette position, and does not state which positions within each ferrule a cassette uses. Checked September 16, 2026.

Cited to show that ordering information fixes a panel’s geometry and leaves its numbering and internal fiber mapping to the assembly document. The per-cassette figures quoted in the guide are arithmetic on the stated chassis counts, not separate claims by the publisher. No product recommendation or performance claim is made.

Rackstamp provides editorial field guidance. IDs, cases, and worksheet entries are fictional examples unless identified otherwise. Distinguish local conventions from adopted standards. Source notes describe the evidence scope; a linked overview is not the full standard or a project approval.

## Related guidance

- [Fiber trunks and breakout legs are ambiguous](https://datacenterlabeling.com/problems/fiber-trunk-breakout-map)