uxcell Blue Tip 5.5x2.1mm Male to 5.5 x 2.1mm Female Jack DC Power Connector Black

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

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

Hanvex HDCQ12 12ft 2.1mm x 5.5mm DC Plug Extension Cable for 12V Power Adapter and more, 20AWG Cord for CCTV, LED

TalentCell Rechargeable 72W 132WH 12V/11000mAh 9V/14500mAh 5V/26400mAh DC Output Lithium Ion Battery Pack For LED Strip and CCTV Camera, Portable Li-ion Power Bank, Black

Hanvex HDCQ6 6ft 2.1mm x 5.5mm DC Plug Extension Cable for 12V Power Adapter and more, 20AWG Cord for CCTV, LED

Conwork 2-Pack 5.5 x 2.1mm DC Power Plug Jacket Female to Micro USB Male Charge Adapter for Cellphone Tablet