AXIOM 40GBASE-CR4 QSFP+ PASSIVE DAC CABLE DELL COMPATIBLE 2M Power/Data Outlets so there's no external power

so there's no external power adapter required

Compatibility: ViewSonic Projectors:

com 4 Port USB C Hub to 3x USB A & 1x USB-C - SuperSpeed 10Gbps USB Type-C 3

They are resilient

Axiom 10GBASE-AOC SFP+ Active Optical Cable for Brocade 75m - 10GE-SFPP-AOC-7501

AXIOM 40GBASE-CR4 QSFP+ PASSIVE DAC CABLE DELL COMPATIBLE 2M Power/Data Outlets so there's no external powerAxiom 40GBASE CR4 QSFP+ Passive DAC Cable Dell Compatible 2m Axiom Twinax Direct Attach Cables (DAC) are 100% compatible in all OEM applications. They are pre configured with an application specific code to meet the requirement set forth by the router and switch OEMs. Axiom compatible twinax cables perform, fit and function identically when compared to "Original" cables. Axiom brand cables also function with other brands within the same network. 100%