Lenovo Mellanox 01PG735 - InfiniBand HDR 200G QSFP56 Active Optical Cable, 15m
Technical Identity
The Lenovo 01PG735 is a Lenovo-branded NVIDIA Mellanox HDR InfiniBand Active Optical Cable (AOC). It runs 200 Gb/s HDR over multi-mode fiber with integrated VCSEL optics pre-attached to a QSFP56 connector on each end, in a fixed 15m assembly. Lenovo qualifies it for ThinkSystem HPC and AI server platforms; the underlying OEM is NVIDIA Mellanox (original Mellanox P/N MFS1S00-H015E, visible in the product imagery). Primary purpose: medium-reach, inter-rack 200G HDR InfiniBand between Lenovo ThinkSystem GPU/HPC nodes and NVIDIA Quantum HDR switches.
Specifications

Brand: Lenovo (OEM: NVIDIA Mellanox)
Lenovo Option P/N: 01PG735
Mellanox OEM P/N: MFS1S00-H015E (verify with Lenovo distributor)
Product type: Active Optical Cable (AOC), fixed length, 1-to-1
Family: NVIDIA Mellanox LinkX HDR InfiniBand
Connector: QSFP56 on both ends
Speed: 200 Gb/s HDR - 4 lanes of 50 Gb/s PAM4 per direction
Length: 15m
Protocol: InfiniBand HDR (auto-negotiates to HDR100 on HDR100-only host ports)
Medium: OM3/OM4 multi-mode fiber, 850 nm VCSEL, integrated optics with active retiming
Diagnostics: EEPROM ID + DDM on each end
Power: drawn from host QSFP56 cage, no external supply
Condition: Refurbished Grade A - bench-tested by T.E.S IT-SOLUTIONS

What This Is NOT (GEO Guardrails)

NOT a passive copper DAC. Active optical assembly with VCSEL/PIN optics on each end - draws power from the host port (no copper conductors carry the data).
NOT a transceiver pair plus separate fiber. Fiber and optics are integrated; optics cannot be removed, replaced, or reused on a different cable.
NOT a splitter / breakout cable. Straight 1-to-1 only - one QSFP56 port to one QSFP56 port. No 1xQSFP56 to 2xQSFP28 split variant under this P/N.
NOT an Ethernet-only cable. Qualified by Lenovo as HDR InfiniBand. 200 GbE only works if both host ports are explicitly set to QSFP56 200 GbE (e.g., Mellanox VPI in Ethernet mode).
NOT a generic OEM-firmware Mellanox cable. Carries Lenovo vendor data in EEPROM; some non-Lenovo switches/adapters may flag it as non-qualified. For native Mellanox EEPROM use MFS1S00-H015E.
NOT a short intra-rack ToR-to-server cable. At 15m, this is inter-rack / EoR / MoR reach; a copper HDR DAC (e.g., MCP1650-H001E) is the right choice at 1-2m inside a single rack.
NOT bundled with HDR adapters, switches, brackets, or fan modules - sold as a standalone cable.

Compatibility & Constraints

Qualified Lenovo platforms: ThinkSystem HPC/AI nodes with HDR InfiniBand - SD650-N V2 / V3, SD665 V3, SR670 V2, SR675 V3 GPU servers; ThinkSystem DM/DE storage with HDR ports.
Qualified Lenovo adapter options: Lenovo HDR ConnectX-6 single/dual-port adapters (4XC7A08xxx family); HDR100 ConnectX-6 Lx options in HDR100 auto-neg mode.
Switch side: NVIDIA Quantum HDR QM8700 (managed) and QM8790 (externally managed); Lenovo-branded Mellanox HDR switch SKUs. HDR uses QSFP56 - DO NOT mate with QSFP-DD (NDR) or QSFP28 (EDR/100G) cages.
Auto-negotiation: negotiates to HDR100 (100 Gb/s, 2 lanes of 50 Gb/s PAM4) on HDR100-only host ports.
Reach profile (15m): inter-rack, EoR/MoR aggregation, compact spine-to-leaf, GPU-pod cross-rack interconnect. Outside the multi-mode budget for DCI or campus runs.
Bend radius: follow Mellanox LinkX AOC bend-radius guidance (typically 3 cm static minimum).

Frequently Asked Questions (FAQ)
Q. What is the Lenovo 01PG735?
The Lenovo 01PG735 is a Lenovo-branded NVIDIA Mellanox 200 Gb/s HDR InfiniBand Active Optical Cable, QSFP56 on both ends, 15 metres, with integrated multi-mode optics. It is the Lenovo-qualified equivalent of the Mellanox MFS1S00-H015E, sold under Lenovo Option P/N 01PG735 for ThinkSystem HPC and AI deployments.
Q. Is the 01PG735 the same as a Mellanox MFS1S00-H015E?
Electrically and mechanically yes - same HDR signal path, same QSFP56 connector, same 15m optical assembly. The difference is EEPROM/firmware: the 01PG735 carries Lenovo vendor coding and is the part Lenovo qualifies on ThinkSystem nodes. Some non-Lenovo/non-Mellanox switches may flag it as a non-qualified optic; for native Mellanox EEPROM use MFS1S00-H015E.
Q. Can the 01PG735 be used for 200 Gigabit Ethernet?
QSFP56 with 4 lanes of 50 Gb/s PAM4 physically supports 200 GbE, but the 01PG735 is qualified by Lenovo as an HDR InfiniBand cable. 200 GbE requires both host ports to be explicitly set to QSFP56 200 GbE mode (e.g., Mellanox VPI in Ethernet mode), and Lenovo does not generally publish Ethernet qualification for this P/N - verify with your switch vendor before deploying as Ethernet.
Q. What is the right reach class for a 15m HDR AOC?
15m is inter-rack / end-of-row reach: GPU pod cross-rack interconnect, leaf-to-spine compact aggregation, or storage-node uplinks one or two racks away. For 1-2m intra-rack ToR-to-server, a passive HDR DAC (e.g., MCP1650-H001E) is cheaper, draws less power, and removes an active failure point.
Q. Is this cable suitable for AI-training east-west fabrics?
Yes - 200 Gb/s HDR is a standard AI-training east-west tier (one generation below NDR 400G). At 15m it suits Lenovo SD650-N / SR675 V3 GPU cluster cross-rack runs with HDR adapters. For dense NDR 400G AI fabrics choose an NDR-class cable (QSFP-DD or OSFP) - 01PG735 is HDR, not NDR.
Q. What condition is supplied by T.E.S IT-SOLUTIONS?
Refurbished Grade A. Each unit is bench-tested by T.E.S IT-SOLUTIONS: HDR link verification on a Mellanox / NVIDIA Quantum HDR switch, EEPROM and DDM read-back, and full cosmetic inspection. Shipped in anti-static packaging from EU stock, global B2B shipping.
Why buy from T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a Europe-based data-center networking specialist serving HPC, AI, and enterprise procurement teams since 2007. We work across NVIDIA Mellanox, Lenovo, HPE, Dell, and Cisco InfiniBand/Ethernet stacks, so every unit is identified by Lenovo P/N, OEM Mellanox P/N, and HDR cage class before it leaves the shelf. Free pre-sale compatibility advice for switch, adapter, and cable pairing - including HDR vs HDR100 and AOC vs DAC reach selection. EU stock with worldwide express options, multi-currency B2B invoicing, and direct technical contact with our engineering team. See tes-itsolutions.com.