megausb PSU: https://www.ebay.co.uk/itm/DC-5V-24V-Universal-Regulated-Switching-Power-Supply-1A-60A-10W-480W-LED-3D-PSU/323575684073 USB PORT: https://www.ebay.co.uk/itm/USB-Connector-Plug-Socket-Male-Female-Type-A-B-Micro-PCB-2-0-3-0/283307836924 POLYFUSE: https://www.ebay.co.uk/itm/Polyswitch-Polyfuse-Resettable-Fuse-Radial-RXEF-RUEF-RGEF-16V-30V-60V-72V-250V/152595775446