7Z57A03559 Lenovo 5M Passive 25G SFP28 DAC Cable QSFP28 100G-TO-4X25G Breakout Cables

7Z57A03559 Lenovo 5M Passive 25G SFP28 DAC Cable QSFP28 100G-TO-4X25G Breakout Cables

Lenovo-branded SFP / SFP+ / SFP28 / QSFP+ / QSFP28 transceiver — fiber or DAC copper optic for Lenovo server NICs and switches.

Specifications

• Part Number: 7Z57A03559
• Brand: Lenovo
• Form Factor: SFP (1G) / SFP+ (10G) / SFP28 (25G) / QSFP+ (40G) / QSFP28 (100G) / QSFP-DD (200G/400G) — see PN
• Optic Class: SFP / SFP+
• Speed: 1G / 10G / 25G / 40G / 100G — see PN
• Wavelength: 850nm (SR/MMF) / 1310nm (LR/SMF) / 1550nm (ER/SMF) / coded by class
• Connector: LC duplex (most) / MPO (parallel-fiber QSFP) / RJ45 (BASE-T variants 1G)

Compatibility

Lenovo transceivers are firmware-keyed — third-party SFPs may work but typically trigger 'unsupported transceiver' warnings. For production use, deploy vendor-original.

• Lenovo NICs (Intel/Broadcom/Mellanox Lenovo-branded): ThinkSystem SR Gen1+ with SFP cage
• Lenovo / Mellanox ToR switches: ThinkSystem switches + Mellanox SN-series

Use Cases

Server NIC ports + ToR switch uplinks + SAN HBA ports. SR/MMF for in-rack and short-rack connections (cheaper). LR/SMF for cross-datacenter / cross-MDF runs. DAC copper for in-rack direct attach (lowest latency, lowest cost, no transceiver pair needed). AOC for medium-range (5-30m) where DAC max length insufficient.

Ships worldwide from ICD, Cairo, Egypt. All parts are tested, inspected, and backed by ICD's quality guarantee.