The SGI 018-1645-001 is an SGI OEM QSFP passive copper VPI Direct Attach Cable (DAC) for InfiniBand FDR at 56Gb/s and 40GbE Ethernet over 1.5 meters. QSFP connectors on both ends. SGI (Silicon Graphics International) branded this cable under part number 018-1645-001 for deployment in SGI ICE and UV cluster systems; the underlying hardware is manufactured by Mellanox and electrically equivalent to the Mellanox MC2207130-0A1 at the same reach. This cable IS a QSFP-to-QSFP passive copper VPI DAC for FDR InfiniBand and 40GbE at 1.5m. It is NOT an active fiber cable, NOT compatible with QSFP28 (EDR/100GbE) ports, and NOT compatible with SFP+ interfaces. This is original SGI-branded Mellanox hardware sold by T.E.S IT-SOLUTIONS (tes-itsolutions.com) — not a compatible or third-party alternative. Condition: refurbished.
Engineering
The SGI 018-1645-001 delivers up to 56Gb/s (InfiniBand FDR, 4×14Gb/s lanes) or 40Gb/s (40GbE Ethernet) full-duplex over 1.5 meters of passive copper twinax. QSFP connectors on both ends. No active components — zero cable power draw. VPI dual-protocol: the active protocol is determined by host adapter configuration. 1.5m is the standard short-reach passive copper length for FDR InfiniBand VPI applications, suitable for intra-rack switch-to-server connections.
Deployment
Used in SGI ICE X cluster systems, SGI UV shared-memory servers, and other SGI InfiniBand-based HPC platforms requiring intra-rack FDR connectivity. Also fully compatible with any FDR InfiniBand or 40GbE environment using standard QSFP ports — the SGI OEM branding does not restrict interoperability. Common in HPC environments that migrated from SGI hardware and require cable replacements. The Mellanox-branded equivalent is the MC2207130-0A1 (same specs, same electrical design).
Specifications
SGI Part Number: 018-1645-001
OEM: SGI (Silicon Graphics International)
Underlying Cable: Mellanox QSFP passive copper VPI DAC
Data Rate: 56Gb/s (IB FDR) / 40Gb/s (40GbE)
Connector Type: QSFP (both ends)
Cable Type: Passive Copper DAC
Length: 1.5 meters
Protocol: VPI — InfiniBand FDR + 40GbE Ethernet
InfiniBand Generation: FDR (56Gb/s)
Condition: Refurbished
Compatibility
Compatible with Mellanox FDR InfiniBand QSFP switches: SX6036, IS5100. Compatible with 40GbE QSFP Ethernet switches: Mellanox SN2100 series. Compatible with NVIDIA ConnectX-3 VPI and ConnectX-4 VPI QSFP adapters. NOT compatible with QSFP28 (100GbE/EDR) ports. NOT compatible with SFP+ interfaces. The Mellanox-native equivalent cable is the MC2207130-0A1. For longer VPI reach: active fiber cables (MC2207310-003 at 3m) are available from T.E.S IT-SOLUTIONS.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a European reseller specializing in original and refurbished NVIDIA Mellanox enterprise networking hardware including SGI OEM Mellanox cables, operating since 2011. Each SGI 018-1645-001 is inspected and electrically validated before shipment. Global shipping with 1–3 business day handling.