uxcell 5.5mm x 2.5mm Male Connector to 5.5mm x 2.1mm Female Jack DC Power Adapter Black

PHC RC-x2555C1 DC Barrel Plug Converter, 2.1mm x 5.5mm to 2.5mm x 5.5mm, 3" cord

uxcell Blue Tip 5.5x2.1mm Male to 5.5 x 2.5mm Female Jack DC Power Connector Black

Coax Barrel Plug Adapter from 2.5mm to 2.1mm Power Plug by Creative Lighting Solutions LLC

JacobsParts DC Coupler Female to Female F/F 5.5mm x 2.1mm Barrel Jack Power Connector Plug for LED / CCTV

Valley Enterprises® 2' Male to Male 2.1mm x 5.5mm Plug DC Power Adapter Cable 18GA

Valley Enterprises® 3' Male to Male 2.1mm x 5.5mm Plug DC Power Adapter Cable 18GA

Valley Enterprises® 6' Male to Male 2.1mm x 5.5mm Plug DC Power Adapter Cable 20GA

DC Power 12V 5.5mm x 2.5mm Barrel Male Plug Connector Pigtail

Areyourshop 6 Pcs New Copper DC Power 5.5mmx2.1mm Female To 5.5mmx2.5mm Male Adapter

[Utral Thick 18AWG] 10 Pairs DC Power Pigtail Cable, 12V 5A Male & Female CCTV Security Camera Power Adapter Connectors for CCTV DVR Surveillance Video System by MILAPEAK (2.1mm x 5.5 mm, 18AWG)