# Who does Cisco pay? Who are its key suppliers?
Canonical: https://valuechain.wiki/cisco · Facet: suppliers · Updated: 2026-07-12T05:39:12.212637+00:00 · Source: ValueChain.wiki (cited money-flow graph)

**Citable summary**: Cisco's confirmed suppliers/cost counterparties include Fabrinet, TSMC plus 1 undisclosed/aggregate relationship. Per the valuechain.wiki graph: 3 cost edges, backed by 4 dated sources, 3 of them primary filings (as of 2026-07-12).

### Fabrinet (mid)  → /fabrinet.md
- note: Outsources optical-module and transceiver manufacturing to Fabrinet — a key upstream dependence for AI-networking optics.
- [confirms] MatrixBCG (EN, research, published 2026-01-01) https://matrixbcg.com/blogs/how-it-works/fabrinet: "Outsources optical-module manufacturing to Fabrinet."
- [confirms] SEC EDGAR (EN, filing, published 2025-08-18) https://www.sec.gov/Archives/edgar/data/0001408710/000140871025000036/fn-2025818xex991q425.htm: "Outsources optical-module manufacturing to Fabrinet."

### TSMC (mid)  → /tsmc.md
- note: Outsources in-house Silicon One switch chips to TSMC — dependent on foundry capacity and advanced nodes.
- [confirms] SEC EDGAR (EN, filing, published 2025-09-01) https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=CSCO&type=10-K: "Silicon One is Cisco-designed, fabbed at an advanced foundry."
- [confirms] Cisco (EN, filing, published 2025-01-01) https://www.cisco.com/site/us/en/products/networking/silicon-one/index.html: "Cisco fabs Silicon One at TSMC's advanced nodes (fabless design per Cisco 10-K)."

### 광부품·부품 (비공개) (low)
- note: Optics and components (e.g., Fabrinet).
- [confirms] SEC EDGAR (EN, filing, published 2025-09-01) https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=CSCO&type=10-K: "Sources optics/components for switches."

Reverse side: https://valuechain.wiki/cisco/customers.md · Ripple: https://valuechain.wiki/cisco/ripple.md

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