NVIDIA Mellanox MTEF-PSR-AC-C 1100W AC Power Supply, C2P Airflow: This is a hot-swappable AC power supply unit for NVIDIA Mellanox 1U switch chassis. The PSR designator indicates connector-to-power (C2P) airflow, the reverse direction of the PSF series. This is a power module with internal AC/DC conversion, not a battery backup, redundant external power feed, or DC PSU. This is a refurbished unit.
Engineering Context
The MTEF-PSR-AC-C delivers up to 1100W of regulated DC power to the host switch from a single-phase AC input. Its C2P (rear-to-front) airflow is used in racks where the cold aisle is at the port side and the hot aisle is at the connector side. Hot-swap insertion supports N+N or N+1 redundant deployments without packet loss, and the front-panel fan and LED indicators provide local status. The PSU must be paired with chassis fan modules of matching airflow direction to maintain proper thermal flow.
Deployment & Use Cases
Redundant power source in NVIDIA Quantum InfiniBand and Spectrum Ethernet 1U chassis. Field replacement of failed PSUs without bringing down the switch. Lab and HPC test rigs that require hot-spare power feeds. Data halls with reverse hot-aisle/cold-aisle plumbing where C2P airflow is mandated.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MTEF-PSR-AC-C
Type: Hot-swappable AC Power Supply Unit
Output Power: 1100W
Input: Single-phase AC
Airflow Direction: C2P (Connector-to-Power, rear-to-front)
Form Factor: 1U chassis module
Hot-Swap: Yes
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with NVIDIA Mellanox QM8700/QM8790 InfiniBand HDR switches and SN3700/SN3700C/SN3800/SN4600C Spectrum Ethernet switches that accept 1U C2P AC PSUs. All PSUs and fan modules within a single chassis must share the same airflow direction; mixing C2P with P2C inside one switch is not supported. Not interchangeable with the MTEF-PSF-AC-C (P2C) variant. Not a DC PSU. Single-phase AC input only.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS bench-tests every PSU for output regulation, fan operation, and connector integrity before shipment. Orders ship in 1–3 business days with global delivery, and our team can advise on airflow matching, redundancy planning, and supported chassis revisions.