NVIDIA Mellanox MTEF-PSF-AC-L 2000W AC Power Supply Unit, P2C Airflow: This is a hot-swappable AC power supply module for NVIDIA Spectrum-3 SN4000 series 400G Ethernet switches, including the MSN4800. The PSU delivers 2000W of output and uses Power-to-Connector (P2C) airflow direction. This is a hot-swap PSU module, not a chassis-integrated power source and not a DC-input variant. This is a refurbished unit.
Engineering Context
The MTEF-PSF-AC-L provides 2000W of regulated DC output to the switch backplane from AC mains input. The high-wattage rating supports the elevated thermal and ASIC power budgets of Spectrum-3 SN4000 series 400G chassis such as the MSN4800. The P2C (Power-to-Connector) airflow direction matches switches built for reverse-airflow rack deployments, where cool air enters the rear power side and exits the front connector side. Hot-swap capability allows replacement of a failed PSU without disrupting switch operation, supporting redundant 1+1 PSU pair operation. The module slides into a dedicated bay on the rear of the switch chassis.
Deployment & Use Cases
Replacement PSU for Spectrum-3 SN4000 series and MSN4800 400G Ethernet switches in reverse-airflow rack rows. Stocking spare for hyperscale and enterprise data centers running 400G Ethernet fabrics. Field replacement during planned maintenance windows where redundant PSU pair operation must be preserved. Lab and staging refresh deployments where matched airflow direction across all chassis is required to keep a consistent thermal profile.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MTEF-PSF-AC-L
Module Type: Hot-swappable AC PSU
Output Power: 2000W
Input: AC mains
Airflow Direction: P2C (Power to Connector)
Compatible Switches: Spectrum-3 SN4000 series, including MSN4800
Switch Class: 400G Ethernet
Form Factor: Hot-swap PSU module
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with NVIDIA Spectrum-3 SN4000 series 400G Ethernet switches, including MSN4800. Must be paired with matching P2C-airflow fan modules in the same chassis — Mellanox does not support mixing P2C and C2P modules within a single switch. Not compatible with switch chassis requiring C2P (Connector-to-Power) airflow. Not a DC-input PSU variant. Not interchangeable with the lower-wattage MTEF-PSF-AC-E (550W) or MTEF-PSF-AC-F (1500W) units used by other Mellanox switch families. Verify chassis airflow orientation and switch model before installation.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS tests every Mellanox PSU module under load before shipment, verifying output regulation, fan operation, and status LED behavior. Visit tes-itsolutions.com for the full Mellanox switch accessory catalog. Handling time is 1–3 business days with global shipping.