NVIDIA Mellanox MTEF-PSF-DC-B 800W DC Power Supply Unit, P2C Airflow: This is a hot-swappable 800W DC-input power supply unit (PSU) field-replaceable module for NVIDIA Mellanox Spectrum SN2410 and SN2700 Ethernet switches. The unit ships with P2C (Power-to-Connector / port-side exhaust) airflow direction. This is a switch-internal PSU module, not a standalone power source or external AC/DC converter. This is a refurbished unit.
Engineering Context
The MTEF-PSF-DC-B is sized for the SN2410 and SN2700 platforms, which support dual redundant 1+1 PSUs. The "B" suffix indicates the airflow direction: P2C blows air from the PSU/fan side toward the port (connector) side, matching racks where cold-aisle air enters at the rear of the switch. The unit is hot-swappable, allowing a single PSU to be replaced under load without taking the switch offline. Pairing two MTEF-PSF-DC-B units yields full N+N DC redundancy on these switches.
Deployment & Use Cases
Replacement PSU for an SN2410 or SN2700 switch in a DC-powered telco or hyperscale data center hall. Building out a new SN2410/SN2700 with two redundant DC PSUs (1+1). Service-provider central office racks where -48V DC is the standard power feed. Carrier-grade NEBS-style installations that mandate DC power and front-to-back or rear-to-front airflow control. Spare on hand for hot-swap replacement.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MTEF-PSF-DC-B
Type: Hot-swappable Power Supply Unit (PSU)
Power Output: 800W
Input: DC
Airflow: P2C (Power-to-Connector, port-side exhaust)
Hot-swap: Yes
Compatible Switches: Mellanox Spectrum SN2410, SN2700
Redundancy: Supports 1+1 redundant configurations
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with the SN2410 and SN2700 Spectrum Ethernet switch chassis only. Not compatible with Spectrum-2 (SN3000) or Spectrum-3 (SN4000) families — those switches use different PSU modules. Not compatible with AC-input chassis configurations: this is a DC-input PSU. Airflow direction must match all other PSUs and fans installed in the same chassis — mixing P2C and C2P modules in the same switch will cause thermal alarms. The "DC-B" variant is the P2C unit; the C2P (reverse airflow) variant is a different MPN.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS tests every PSU for output voltage, fan operation, and connector condition before shipment. We provide expert consultation on Mellanox Spectrum switch sparing strategies, global shipping, and comprehensive warranty. Standard handling time is 1–3 business days.