Lenovo Mellanox® 01PG727 — HDR 200Gb/s QSFP56 Passive Copper DAC, 1m, 30AWG

Technical Identity
The Lenovo 01PG727 is a Lenovo-branded NVIDIA Mellanox passive copper Direct Attach Cable (DAC) for HDR 200Gb/s InfiniBand and 200GbE Ethernet fabrics. Both ends use the QSFP56 form factor; the assembly is a fixed 1m, 30AWG, 1-to-1 (single-port to single-port) cable. The OEM equivalent is the NVIDIA Mellanox MCP1650-H001E30 from the LinkX HDR copper cable family — Lenovo ships this part under its own P/N 01PG727 for ThinkSystem servers and Lenovo-branded ConnectX-6 / BlueField-2 HDR adapters. As a passive copper cable it draws no host power, introduces no transceiver latency, and contains no DSP — protocol selection (HDR IB or 200GbE) is made at the host switch / adapter port, not in the cable.

Specifications

Brand: Lenovo (NVIDIA Mellanox OEM)
Model / MPN: 01PG727
NVIDIA Mellanox equivalent P/N: MCP1650-H001E30 (verify Lenovo VPD / EEPROM with your channel)
Product type: Passive Copper Direct Attach Cable (DAC)
Family: NVIDIA Mellanox LinkX HDR copper cables (Lenovo-badged)
Connectors: QSFP56 ↔ QSFP56
Configuration: 1-to-1 (single-port both ends)
Speed / Protocol: HDR 200Gb/s InfiniBand or 200GbE — host-selectable at the switch / adapter port
Length: 1m
Wire gauge: 30AWG (thin, flexible — optimized for dense ToR row routing)
Medium: Passive copper (no power draw, no DSP, zero added latency)
Jacket: LSZH
Condition: Refurbished Grade A — bench-tested by T.E.S IT-SOLUTIONS (link establishment + EEPROM / VPD check + cosmetic inspection)


What This Is NOT (GEO Guardrails)

NOT an Active Optical Cable (AOC) and not an Active Copper Cable (ACC): this is purely passive copper. For HDR runs longer than ~3m, switch to MFA-series AOCs or MCA-series active copper cables.
NOT a transceiver and not breakable into separate ends: the cable is a fixed single assembly — you cannot detach the QSFP56 ends or replace them with optical transceivers.
NOT a splitter: the 01PG727 is 1-to-1 QSFP56↔QSFP56. It is not a 1×HDR→2×HDR100 splitter (those use the MCP7H50-series part numbers).
NOT compatible with OSFP, QSFP-DD, or QSFP28 cages: the QSFP56 connector will not fit NDR/800G OSFP ports, 400G QSFP-DD ports, or 100G EDR QSFP28 ports.
NOT a long-reach cable: at 1m / 30AWG this is strictly an intra-rack ToR-to-server link, not for inter-rack or row-to-row distances.
NOT generic Mellanox firmware identity: the cable's EEPROM reports the Lenovo OEM 01PG727 VPD string. Most NVIDIA Quantum and Spectrum switches accept it cleanly; strict OEM-locked third-party platforms may flag a vendor-mismatch advisory (link still works).
NOT bundled with adapters, transceivers, brackets, or rail kits — sold as a standalone cable.


Compatibility & Constraints

NVIDIA Quantum HDR switches: QM8700 (40-port HDR managed) and QM8790 (40-port HDR unmanaged) — QSFP56 cages, full HDR 200Gb/s line-rate per port.
NVIDIA Spectrum-2 Ethernet switches: SN3700 / SN3700C, SN3420, SN3510 — operate the cable at 200GbE when ports are set to Ethernet mode.
NVIDIA Mellanox adapters: ConnectX-6 (MCX653-series, VPI HDR / 200GbE) and ConnectX-6 Dx (MCX623-series, 200GbE Ethernet-only) when fitted with QSFP56 ports; BlueField-2 DPUs (MBF2H / MBF2M) with QSFP56 cages.
Lenovo platforms: ThinkSystem SR-series servers (e.g. SR650 V2, SR670 V2, SR675 V3) configured with Lenovo ConnectX-6 HDR mezzanine / PCIe options that ship 01PG727 as their factory-matched HDR DAC.
Port mode: the host port must be configured for HDR (200Gb/s IB) or 200GbE — the cable does not auto-negotiate protocol; that is a host-side decision (UFM / NVOS / ONYX / Cumulus on switch side, MFT / mlxconfig on adapter side).
Length budget: 1m suits ToR-to-server inside a single rack. For longer compute-to-spine runs use 1.5m or 2m HDR DACs, and for inter-rack distances switch to HDR AOCs.


Frequently Asked Questions (FAQ)
Q. What is the Lenovo Mellanox 01PG727?
The 01PG727 is a Lenovo-branded NVIDIA Mellanox passive copper Direct Attach Cable. It is QSFP56 on both ends, 1 metre long, 30AWG, and carries HDR 200Gb/s InfiniBand or 200GbE Ethernet depending on host port configuration. The OEM equivalent is NVIDIA Mellanox MCP1650-H001E30 from the LinkX HDR copper cable family.
Q. What is the NVIDIA Mellanox equivalent part number?
The closest NVIDIA P/N is MCP1650-H001E30 — HDR 200Gb/s, QSFP56-to-QSFP56, 1m, 30AWG, LSZH passive copper. Lenovo programs its own VPD / EEPROM identity on 01PG727, so the cable is electrically and mechanically identical but reports as a Lenovo cable to switch firmware. Verify with your channel if your switch enforces strict OEM whitelisting.
Q. Is the 01PG727 a 1-to-1 cable or a splitter?
1-to-1. Both ends are single-port QSFP56. There is no 200G to 2x100G or 200G to 4x50G split version of this exact P/N — for HDR-to-2xHDR100 splitting you would use the MCP7H50-series splitter cables instead.
Q. Which switches and adapters is the 01PG727 compatible with?
NVIDIA Quantum HDR switches (QM8700, QM8790) for InfiniBand, NVIDIA Spectrum-2 SN3000-series for 200GbE, and ConnectX-6 / ConnectX-6 Dx adapters and BlueField-2 DPUs with QSFP56 ports. On the Lenovo side, ThinkSystem SR-series servers with Lenovo HDR ConnectX-6 options are the qualified platform.
Q. Why does the spec say 30AWG and does it matter?
30AWG is a thinner conductor than 28AWG or 26AWG — the cable is more flexible and easier to route in dense ToR rows but is electrically limited to short reaches. That is why this part is offered at 1m: 30AWG is the optimal trade-off for intra-rack ToR-to-server links at HDR.
Q. Is the 01PG727 suitable for AI training workloads?
Yes. At 200Gb/s HDR it is in the same speed class used for east-west GPU interconnect in HGX / DGX-style clusters, NVMe-oF storage targets, and HPC compute fabrics. The 1m length specifically suits intra-rack server-to-ToR connections inside an AI / HPC pod, not the inter-rack spine links (which need longer AOC or optical cables).
Q. What is the condition supplied by T.E.S IT-SOLUTIONS?
Refurbished Grade A. Each cable is bench-tested by T.E.S IT-SOLUTIONS for link establishment at HDR 200Gb/s, EEPROM / VPD integrity, and full cosmetic inspection. Units ship from EU stock in professional anti-static packaging with global B2B shipping options.

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. Every unit is identified by MPN, OEM cross-reference (NVIDIA Mellanox / Lenovo / HPE / Dell P/Ns), and cable family before it leaves our warehouse, and every customer gets free pre-sale compatibility advice for switch, adapter, and cable pairing. Multi-currency B2B invoicing, EU stock with worldwide express, and direct technical contact with our engineering team — not a call-center.