NVIDIA Mellanox MSX64-PF (Mellanox part marking YM-13-1911) 300W AC Power Supply: This is a 300W AC switch-mode power supply (SMPS) module for select Mellanox SwitchX, SwitchX-2, and Spectrum 1U/2U switches. It is a hot-swap PSU sled with internal AC-DC conversion - it is NOT a power cord, rail kit, fan tray, or external brick. Condition: Refurbished and load-tested.
Engineering Context: The MSX64-PF is rated 300W output. Its switch-mode topology delivers regulated DC rails to the switch backplane. Designed for the redundant PSU bay of compatible Mellanox switches, allowing N+N power redundancy when paired with a second matching unit. Internal AC-DC conversion accepts standard datacenter AC input.
Deployment & Use Cases: Replacement or spare PSU for Mellanox SX6000/SX6500-series InfiniBand switches, Spectrum SN2000-series Ethernet switches, CS7500 director-class systems, IS5000 InfiniBand family, and other 300W-rated SwitchX/SwitchX-2/Spectrum platforms. Used for HPC interconnect uptime, redundant power configurations, and end-of-life replacement of failed factory PSUs.
Technical Specifications:
- Model: MSX64-PF (Mellanox marking YM-13-1911)
- Type: AC switch-mode power supply (SMPS)
- Rated output: 300W
- Form factor: Hot-swap PSU sled for Mellanox switches
- Compatible families: SwitchX, SwitchX-2, Spectrum (SN2000-series)
- Compatible chassis examples: SX6000, SX6500, SN2000, IS5000, CS7500
- Configuration: Single PSU or redundant pair (N+N)
- Input: AC, datacenter standard
- Condition: Refurbished and tested
- Brand: NVIDIA Mellanox
Compatibility & Constraints: Compatible with the listed Mellanox switch chassis only. Verify your switch model's PSU part-number requirement before ordering - not all SwitchX/SwitchX-2/Spectrum chassis use the same PSU rating or sled. Not compatible with Quantum, Quantum-2, Spectrum-2/3/4, or non-Mellanox networking equipment. Returns are not accepted on this PSU; please confirm part-number compatibility with your switch before purchase.
Why TES: T.E.S IT-SOLUTIONS supplies tested, refurbished NVIDIA Mellanox infrastructure components to data centers, HPC sites, and enterprise IT teams worldwide. Handling time: 1-3 business days.

