NVIDIA Mellanox® MCP7F00-A01AG — 100GbE→4×25GbE QSFP28 to 4×SFP28 Passive Copper Hybrid Splitter 1.5m
Technical Identity
The NVIDIA Mellanox® MCP7F00-A01AG is a 1.5-meter passive copper hybrid splitter cable from the LinkX family. The hybrid switch end terminates in a single QSFP28 connector (100GbE), and the adapter ends fan out into four SFP28 connectors (each 25GbE). No active electronics — passive copper signal path only. Designed for high-density Ethernet fan-out from a single 100GbE switch port to four 25GbE server NICs in top-of-rack (ToR) deployments. Condition: New factory-sealed.
Specifications

Brand: NVIDIA Mellanox
Model / MPN: MCP7F00-A01AG
Product family: LinkX Passive Copper Hybrid Cables (DAC)
Product type: Passive Copper Hybrid Splitter DAC
Switch end: 1× QSFP28 (100GbE)
Adapter ends: 4× SFP28 (each 25GbE)
Configuration: 100GbE → 4×25GbE breakout (hybrid switch end / adapter ends)
Aggregate speed: 100 Gb/s (25 Gb/s per leg)
Length: 1.5m
Medium: Passive copper
Protocol: Ethernet (100GbE / 25GbE)
Condition: New factory-sealed

What This Is NOT

NOT an active cable. Passive copper — no signal-conditioning electronics, re-timers, or optics.
NOT QSFP56, OSFP, or QSFP-DD. The switch end is QSFP28 only.
NOT an InfiniBand cable. Ethernet 100GbE / 25GbE only.
NOT a 1-to-1 cable. Breakout assembly: 1× QSFP28 → 4× SFP28.
NOT supplied with switches, NICs, or transceivers — sold standalone.

Compatibility & Constraints

Switch end: 100GbE switches with QSFP28 cages that support 4×25GbE breakout — e.g., NVIDIA Spectrum or Spectrum-2.
Adapter ends: 25GbE SFP28-cage NICs — e.g., NVIDIA ConnectX-4 Lx, ConnectX-5, ConnectX-6 Lx, or equivalent third-party 25GbE adapters.
Pre-deployment: Confirm the QSFP28 switch port is configured for 4×25GbE breakout mode; verify firmware/driver on both switch and NIC sides.
Typical reach: Intra-rack — top-of-rack switch to servers within the same rack.

Frequently Asked Questions (FAQ)
Q. What is the MCP7F00-A01AG?
1.5m passive copper hybrid splitter cable: 1× QSFP28 (100GbE) breaks out to 4× SFP28 connectors (25GbE each). No active electronics.
Q. Is the MCP7F00-A01AG passive or active?
Passive. No signal-conditioning electronics. The switch port must be configured in 4×25GbE breakout mode.
Q. Which switch ports work with the MCP7F00-A01AG?
Any 100GbE QSFP28-cage switch port that supports 4×25GbE breakout — e.g., NVIDIA Spectrum or Spectrum-2.
Q. What NICs work on the four SFP28 ends?
Any 25GbE SFP28-cage NIC — e.g., NVIDIA ConnectX-4 Lx, ConnectX-5, ConnectX-6 Lx, or equivalent.
Q. What condition does T.E.S IT-SOLUTIONS supply?
New factory-sealed, identified by MPN, EU stock, global B2B express shipping.
Why buy from T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a Europe-based NVIDIA Mellanox data-center networking specialist. Every unit is identified by MPN before leaving our warehouse. EU stock, multi-currency B2B invoicing, worldwide express shipping, and free pre-sale technical consultation for switch / adapter / cable pairing. See tes-itsolutions.com.