NVIDIA Mellanox MC3309124-007 SFP+ 10GbE Passive Copper Direct Attach Cable, 7m, Lot of 5: This is a 7-meter SFP+ to SFP+ passive copper Direct Attach Cable (DAC) for 10 Gigabit Ethernet (10GbE) point-to-point links. This is a passive copper assembly with integrated EEPROM, not an active optical cable, not a transceiver, and not a 25GbE/SFP28 cable. The MC3309124-007 draws no link power from the host port. This listing is for five (5) refurbished units.
Engineering Context
The MC3309124 family covers 10GbE SFP+ DACs across short-to-long passive-copper reach budgets. The -007 variant is at the upper end of practical SFP+ DAC distance: 7 meters. At this length the cable uses a heavier conductor gauge to keep insertion loss within SFF-8431 limits, which translates into a thicker, heavier cable than 1–3 m DACs. The integrated EEPROM identifies the cable to the host per SFF-8472 so the link comes up without a vendor-locked transceiver. Latency is wire-speed; there is no SerDes retiming.
Deployment & Use Cases
10GbE top-of-rack to end-of-row links across adjacent racks where passive copper still reaches. Server-to-switch links with Mellanox SX10xx Ethernet switches and ConnectX-3 / ConnectX-3 Pro / ConnectX-4 Lx EN adapters configured for 10GbE. Mid-range storage interconnect to iSCSI targets and NFS heads. Replacement of failing copper DACs in legacy 10GbE racks where AOCs would be overkill.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MC3309124-007
Form Factor: SFP+ to SFP+
Data Rate: 10GbE (10.3125 Gb/s NRZ)
Cable Type: Passive Copper Direct Attach (DAC)
Length: 7 m
Protocol: 10GbE Ethernet (SFI / SFF-8431 compliant)
Identity EEPROM: SFF-8472 compliant
Power Draw: 0 W (passive)
Condition: Refurbished — tested by T.E.S IT-SOLUTIONS
Quantity: Lot of 5 cables
Compatibility & Hard Constraints
Compatible with Mellanox SX10xx and SN2010 / SN2410 (in 10GbE mode) Ethernet switches and ConnectX-3 / ConnectX-3 Pro / ConnectX-4 Lx EN adapters. Generally interoperable with third-party SFP+ ports that follow SFF-8431, but vendor lock on switches such as some Cisco platforms may reject non-Cisco DACs — verify with your switch model. Not compatible with SFP28 ports running at 25GbE; this is an SFP+ 10GbE-only cable. Not a breakout cable. Passive construction limits reach to the 10GbE SFP+ passive-copper budget (typically 7 m maximum).
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS tests every SFP+ DAC for continuity, EEPROM integrity, and connector wear before shipment. We provide expert consultation on 10GbE deployments, global shipping with 1–3 day handling, and a comprehensive warranty. Visit www.tes-itsolutions.com for our full Mellanox cabling portfolio.