The HP 670759-B25 is an HP OEM-branded QSFP passive copper Direct Attach Cable for InfiniBand FDR at 56Gb/s over 3 meters. This cable is manufactured by Mellanox and carries HP part number 670759-B25, designed for use in HP ProLiant and HP BladeSystem environments with FDR InfiniBand host channel adapters. QSFP connectors on both ends. This cable IS an HP OEM FDR InfiniBand QSFP passive copper DAC. It is NOT a QSFP28 cable, NOT compatible with 100GbE or EDR/HDR InfiniBand ports, and NOT a NVIDIA/Mellanox retail-branded product. This is original HP-branded Mellanox hardware sold by T.E.S IT-SOLUTIONS (tes-itsolutions.com). Condition: refurbished.
Engineering
The HP 670759-B25 delivers 56Gb/s (InfiniBand FDR, 4x14Gb/s lanes) full-duplex over 3 meters of passive copper. QSFP connectors on both ends. No active components — zero cable power draw. Passive design provides sub-microsecond latency for InfiniBand FDR environments. 3-meter reach is the maximum rated length for this passive copper cable at FDR speeds.
Deployment
Designed for use in HP ProLiant server environments with FDR InfiniBand HCA cards, connecting servers to FDR InfiniBand switches such as the Mellanox SX6036 or IS5100 within 3-meter top-of-rack reach. Suitable for HPC clusters built on HP BladeSystem infrastructure with embedded InfiniBand connectivity. Also used in non-HP environments where FDR InfiniBand QSFP passive copper is required — the underlying cable is electrically equivalent to Mellanox FDR DACs despite the HP OEM branding.
Specifications
HP Part Number: 670759-B25
OEM: HP (Hewlett Packard)
Cable Type: Passive Copper DAC
Data Rate: IB FDR 56Gb/s (4x14Gb/s)
Connector Type: QSFP (both ends)
Length: 3 meters
Protocol: InfiniBand FDR
Condition: Refurbished
Compatibility
Compatible with HP ProLiant servers equipped with FDR InfiniBand HCAs. Compatible with FDR InfiniBand QSFP switches including Mellanox SX6036 and IS5100. Compatible with NVIDIA ConnectX-3 FDR adapters in QSFP form factor. NOT compatible with QSFP28 (100GbE or EDR 100Gb/s) ports. NOT suitable for HDR InfiniBand (200Gb/s). NOT suitable for distances beyond 3 meters at FDR speeds — active copper or optical solutions are required for longer reaches. Electrically equivalent to Mellanox MCC4Q30C-003 (30 AWG 3m QSFP FDR DAC) despite HP OEM branding.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a European reseller specializing in original and refurbished enterprise networking hardware including HP OEM Mellanox cables, NVIDIA Mellanox switches, and ConnectX adapters, operating since 2011. Each cable is inspected and validated before shipment. Global shipping with 1–3 business day handling. Technical consultation available.