NVIDIA Mellanox MTEF-PSR-AC-L 1100W AC Hot-Swappable Power Supply (C2P Airflow): This is a 1100-watt AC input, hot-swappable power supply unit (PSU) module for select Mellanox Quantum InfiniBand and Spectrum Ethernet switch chassis. Airflow direction is C2P (Connector-to-Power, port side intake to PSU side exhaust). This is a redundant PSU module, not a switch, fan tray, or rail kit. This unit is refurbished and tested.
Engineering Context
The MTEF-PSR-AC-L delivers 1100 W of DC output to the chassis power bus from a wide-range AC input. C2P airflow means cool air enters at the front (network port) side and exhausts at the rear (PSU / connector) side — the orientation required when the rack is configured with cold aisle at the front. The PSU is hot-swappable, allowing 1+1 redundant pairs to be serviced without dropping the data plane.
Deployment & Use Cases
1+1 redundant PSU pairs in QM8700/QM8780/QM8790 Quantum HDR InfiniBand switches. Power for SN3700, SN3800, and SN4600C Spectrum-class Ethernet switches. TQ8X00 systems requiring the matching 1100 W C2P PSU. PSU replacement during preventive maintenance and spare stocking for AI/HPC clusters.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MTEF-PSR-AC-L
Type: Hot-Swappable AC Power Supply Unit
Output Power: 1100 W
Input: AC
Airflow: C2P (Connector-to-Power / port-to-PSU)
Compatible Switches: QM8700, QM8780, QM8790, SN3700, SN3800, SN4600C, TQ8X00
Hot-Swap: Yes
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Constraints
Validated for QM8700-series, SN3700, SN3800, SN4600C, and TQ8X00 chassis that accept the MTEF-PSR-AC-L module. Not compatible with chassis requiring P2C reverse airflow or with PSU bays specified for higher wattage modules (for example MTEF-PSR-AC-F at 1500 W). Do not mix C2P and P2C PSU variants in the same chassis. AC input only — not a DC PSU.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS load-tests every refurbished PSU and validates output rails before shipment. Catalog at https://www.tes-itsolutions.com. Handling time 1 to 3 business days, global shipping, and expert advice on Mellanox switch power redundancy.