10pairs Dc Connector 5.5x2.1mm / 5.5x2.5mm Male And Female Dc Power Socket Plug Jack 5.5*2.1mm 5.5*2.5mm - Connectors - AliExpress
Amazon.com: Longdex 10 pcs DC Power Adapter 5.5x2.1mm Female Jack to 5.5x2. 5mm Male Plug Electrical Socket Outlet for Universal Laptop Interface Power Cable Connector : Electronics
Seven Star MVR11 5mm Round Pin Plug American To European Type E / F
DC Power Male Plug 3.5x1.3mm 4.0x1.7mm 4.8x1.7mm 5.5x2.1mm