Amphenol SF-NJAAKK0006-000.5M 0.5m (1.6') 400G QSFP112 DAC Cable - 400-Gigabit Ethernet Passive Direct Attach QSFP-112G-PAM4 Cable (32-AWG) - QSFP112 Desktop AI Stacking Cable (OEM PN: NJAAKK-0006)

Buy Amphenol 0.5m (1.6') 400G QSFP112 DAC Cables Now for your Desktop AI Supercomputer Needs!  Our 400GBASE-CR4 802.3by/802.3bs qualified passive direct attach copper (DAC) cables provide next generation performance by combining four SFP112 channels, each operating at speeds of up to 100.0 Gbps (PAM4-112G), into one affordable standard-sized 38-position QSFP connector package (QSFP112); capable of combined speeds in excess of 400.0 Gigabits per second.

The Amphenol Cables on Demand 32 AWG SF-NJAAKK0006-000.5M 400G QSFP112 DAC Cable is 100% identical to the Amphenol NJAAKK-0006 QSFP112 DAC Cable and will also directly substitute for the 30 AWG NJAAKKR-0006 for usage with interconnecting (stacking) two or three desktop AI supercomputer systems via any of their native 400G QSFP112 (ConnectX-7) rated ports.

Note that a limitation to the bus speed of the market's leading GPU-based desktop AI supercomputer only permits 400G-rated QSFP112 stacking cables to run at half-speed (200G).  This is because the units use ConnectX-7 certified QSFP ports, which always require 400G QSFP112 rated cables, regardless of whether the desktop platform can actually utilize the full 400G I/O bandwidth. This is why slower 200G-rated QSFP56 DAC Cables will NOT work reliably as a substitute -- they're detected as non-ConnectX-7 compliant cables by the unit's firmware.

Our QSFP112 cables integrate a newly upgraded 38-position “board-as-connector” design with zinc die-cast backshells for superior EMI resistance, minimal insertion loss, and improved cross-talk performance. Featuring our exclusive Amphenol Spectra-Strip SKEWCLEAR® EXD Extended Distance Series 8-pair wire technology, optimized for 112G/lane applications including 400-Gigabit Ethernet (400GBASE-CR4) and 400G InfiniBand.

SKEWCLEAR EXD wire allows for use of a lighter and more flexible 32 AWG conductor while maintaining a smooth high-frequency response (20 GHz) superior to our competitors' 30 AWG equivalent.  Only Amphenol bramd QSFP-112 DAC Cables include this superior and thinner cable solution known as SKEWCLEAR.  Each 0.5m (1.6-ft) length QSFP112 Direct Attach Copper (DAC) Cable goes through a rigorous assembly and test procedure aimed at eliminating unnecessary signal loss. Our cables are fully compliant to the QSFP112 MSA for guaranteed compatibility with all QSFP112 ports and reverse compatibility with QSFP+ / QSFP28 / QSFP56 ports.