The product is a brand new sealed bag of 4 EMC Amphenol 038-004-933-01 25G 2m SFP to SFP DAC Twinax Cables. These black cables are compatible with universal brands and models, featuring a 1:1 connection split/duplication. With a cable length of 2m, these portable round cables have an output voltage of 1.5V and are designed for easy connectivity between SFP28 connectors. Made in China, these cables offer a reliable solution for high-speed data transmission in computer networking setups.