INFRA Brand - Cisco« QSFP-4SFP10G-CU1M to Arista Networks« CAB-SFP-SFP-1M Compatible TAA Compliant 40GBase-CU QSFP+ to 4xSFP+ Direct Attach Cable (Passive Twinax, 1m) - Lifetime Warranty.
It has been programmed, uniquely serialized, and data-traffic and application tested to ensure it is 100% compliant and functional.
Cost-effective, short length alternative to optical cable