100% compatibility with Cisco QSFP-4SFP10G-CU5M guaranteed StarTech.com lifetime warranty on all StarTech.com SFP cables Designed and tested to perform identically to QSFP-4SFP10G-CU5M QSFP+ breakout cable length is 5 m (16.4 ft) Breakout cable tested to meet or exceed OEM specifications QSFP+ Twinax breakout cable complies with MSA industry standards Breakout cable has low power consumption: < 1 watt Hot-swappable with fiber optic QSFP+ breakout cables