100% compatibility with HP J9281B guaranteed StarTech.com lifetime warranty on all StarTech.com SFP cables Uses a cost-effective copper cabling alternative to fiber SFP+ DAC Twinax Cable length is 1 meter (3.3 feet) SFP+ (Mini-GBIC) cable meets or exceeds OEM specifications SFP+ direct-attach copper cable complies with MSA industry standards Passive DAC copper cable has low power consumption: < 0.1 W Hot-swappable with fiber optic SFP cables and other copper DACs