Tripp Lite 400GbE QSFPDD Passive TwinAx Black Direct Attach Cable, QSFPDD/QSFPDD, 1M - Black/Silver - 400GBase Direct Attach Cable - QSFP-DD (M) To QSFP-DD (M) - 3.3 Ft - Twinaxial - SFF-8665 - Passive - Black, Silver - N282D-01M-BK

• QSFP-DD cable connects high-density network equipment at speeds up to 400 Gbps
  Tripp Lite's N282D-01M-BK provides next-generation performance by combining eight 50 Gb SFP channels into one high-density cable. It's a direct-attach solution ideal for connecting newer switches and other active network devices over short distances in data centers, high-end servers, telco rooms and enterprise wiring closets.
• Excellent construction optimized for applications that use much bandwidth
  This passive copper cable integrates a 400G Ethernet-optimized (400 GbE) 38-position "board as connector" design. Zinc die-cast QSFP-DD connectors on both ends offer superior EMI resistance, minimal insertion loss and low crosstalk for top performance. Ergonomic push/pull tabs make the cable easy to install or remove with one hand. Eight-pair wire technology is optimized for bandwidth-intense applications, such as 128G Fibre Channel and EDR 4x InfiniBand. Flexible 30 AWG conductors maintain a smooth high-frequency response.
• Fully compliant and compatible with a wide range of applications
  The N282D-01M-BK undergoes a rigorous assembly and testing procedure aimed at eliminating unnecessary signal loss. It's fully compliant with the MSA (Multi-Source Agreement) SFF-8665 architecture for guaranteed compatibility with all QSFP-DD ports, as well as RoHS, REACH and IEEE 802.3cd. It is also backward compatible with 40 Gb and 100 Gb networks, so you can future-proof your current application for an eventual upgrade to 400 Gb.

The N282D-01M-BK QSFPDD to QSFPDD 400GbE Passive DAC Copper InfiniBand Cable provides next-generation performance by combining four 28 Gbps SFP channels into one high-density cable. It's ideal for connecting active network equipment in data centers, high-end servers and enterprise wiring closets.
This one-meter copper cable integrates a 400G Ethernet-optimized (400 GbE) 38-position "board-as-connector" design with zinc die-cast QSFPDD connectors for superior EMI resistance, minimal insertion loss and low crosstalk for better performance. Ergonomic pull-tab ejectors make connecting to equipment a quick, easy task. Eight-pair wire technology is optimized for bandwidth-intense applications, including 400-Gigabit Ethernet (100GBASE-CR4), 128G Fibre Channel and EDR 4x InfiniBand. Flexible30 AWG conductors maintain a smooth high-frequency response. The N282D-01M-BK undergoes a rigorous assembly and testing procedure aimed at eliminating unnecessary signal loss.
It's fully compliant with the MSA (Multi-Source Agreement) SFF-8665 architecture for guaranteed compatibility with all QSFP and QSFP+ ports, as well as RoHS and IEEE 802.3bj.