Switch Power Supply technical selection Q&A
Owner-confirmed and documentation-backed questions with explicit variant applicability and source boundaries.
These questions were prepared for technical evaluation from cited documentation. They are not a measured list of frequently asked customer questions. The applicability line belongs to each answer; do not transfer a statement between order-code, firmware, cooling, length, form-factor or crypto variants.
The products listed below are the applicable catalog references. Answers use owner-confirmed manufacturer-origin product data, scoped public documentation, or explicitly stated engineering guidance. Genuine conflicting values are qualified individually.
What do P2C and C2P mean?
Applicable catalog candidates: 930-9BPSU-00JG-000, 930-9BPSU-00JZ-000, 930-9NPSU-00J1-000, 930-9NPSU-00J2-000, 930-9NPSU-00J6-000, 930-9NPSU-00JI-000, 930-9NPSU-00JJ-000, 930-9NPSU-00JN-000, 930-9NPSU-00JQ-000, 930-9SPSU-00RA-00B.
Documentation scope: Air-cooled switch systems and their documented fans or PSUs.
P2C moves air from the power side toward the connectors. C2P moves air from the connectors toward the power side. Select the direction specified for the exact switch configuration.
Public references: Installation | NVIDIA Spectrum-4 SN5000 2U Switch Systems Hardware User Manual.
Can I select a replacement by appearance or wattage alone?
Applicable catalog candidates: 930-9BPSU-00JG-000, 930-9BPSU-00JZ-000, 930-9NPSU-00J1-000, 930-9NPSU-00J2-000, 930-9NPSU-00J6-000, 930-9NPSU-00J9-000, 930-9NPSU-00JI-000, 930-9NPSU-00JJ-000, 930-9NPSU-00JN-000, 930-9NPSU-00JQ-000, 930-9SPSU-00RA-00B.
Documentation scope: family-level; exact compatibility not implied.
Use the manufacturer replacement-parts table for the complete switch model and order code. Matching dimensions, connector shape or PSU wattage alone does not establish compatibility.
Public references: Accessory and Replacement Parts | NVIDIA Spectrum-3 SN4000 1U and 2U Switch Systems Hardware User Manual, Accessory and Replacement Parts | NVIDIA Spectrum-4 SN5000 2U Switch Systems Hardware User Manual.
Does a power supply listing prove the required power cord is included?
Applicable catalog candidates: 930-9BPSU-00JG-000, 930-9BPSU-00JZ-000, 930-9NPSU-00J1-000, 930-9NPSU-00J2-000, 930-9NPSU-00J6-000, 930-9NPSU-00JI-000, 930-9NPSU-00JJ-000, 930-9NPSU-00JN-000, 930-9NPSU-00JQ-000, 930-9SPSU-00RA-00B.
Documentation scope: Switch system, PSU and power-cord selection.
Check the exact ordering row and quote. Some PSU rows explicitly include a cord; the Q3400-RA system ordering row explicitly excludes power cords. Cord region and electrical ratings still need checking.
Public references: Accessory and Replacement Parts | QM97XX 1U NDR 400Gbps InfiniBand Switch Systems User Manual, NVIDIA Q32xx and Q34xx XDR 800Gb/s InfiniBand Switch Systems User Manual | NVIDIA Q32xx and Q34xx XDR 800Gb/s InfiniBand Switch Systems User Manual.
Where should I check the replacement procedure?
Applicable catalog candidates: 930-9BPSU-00JG-000, 930-9BPSU-00JZ-000, 930-9NPSU-00J1-000, 930-9NPSU-00J2-000, 930-9NPSU-00J6-000, 930-9NPSU-00J9-000, 930-9NPSU-00JI-000, 930-9NPSU-00JJ-000, 930-9NPSU-00JN-000, 930-9NPSU-00JQ-000, 930-9SPSU-00RA-00B.
Documentation scope: family-level; exact compatibility not implied.
Use the hardware manual for the exact chassis and component. Treat the replacement-parts list as ordering guidance; it does not replace the installation, airflow and safety instructions.
Public references: Installation | NVIDIA Spectrum-4 SN5000 2U Switch Systems Hardware User Manual, Installation | QM97XX 1U NDR 400Gbps InfiniBand Switch Systems User Manual.
What is the specified configuration of MTEF-PSF-AC-M?
Applicable catalog candidates: 930-9NPSU-00J9-000.
Documentation scope: Exact owner-confirmed product; any held field is explicitly identified in this record.
NVIDIA Power-Supply Unit, 250W AC, P2C Airflow, For SN2201 switch, Power cord included.
Public references: PNY NVIDIA Networking Product Range, May 2025.
Does a public ordering or compatibility entry prove stock and delivery?
Applicable catalog candidates: 930-9NPSU-00J9-000.
Documentation scope: Editorial procurement boundary; no promised availability.
No. Record the manufacturer’s published lifecycle wording separately from commercial availability. Stock, lead time, software entitlement, support and warranty require a current supplier quote.
Public references: QM97XX 1U NDR 400Gbps InfiniBand Switch Systems User Manual | QM97XX 1U NDR 400Gbps InfiniBand Switch Systems User Manual, Ordering Information | NVIDIA Spectrum-4 SN5000 2U Switch Systems Hardware User Manual.
Availability is on request. Sales provides the USD quotation after the exact configuration is confirmed. No stock, condition or delivery promise is made here.
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