Explain what Spectrum-X actually is (a switch + SuperNIC system, not one box), pick the right Spectrum switch for a Dell AI pod against real airflow/power/cooling constraints, get a link up at the right speed and FEC, and read the RA version row that governs the whole fabric.

1. 1.1 What Spectrum-X is, and what it is notThe benchmark that measured nothingU
2. 1.2 Choosing the switch: SN2201 through SN6800-LDThe switch that cannot be installedU
3. 1.3 Links that come up: breakout, FEC and auto-negotiationTwenty-four up, eight refusingAp
4. 1.4 The RA row: version pinning across switch, NIC and hostThe bridge call about one bug fixE
5. 1.5 Dell PowerSwitch SN-series: who supports whatWe will just run SONiC on itAn
6. Checkpoint