This USB power cable provides a flexible way to power the Hummingbird Bit without AA batteries. This cable adapts from a USB port to a barrel
USB Male Port Type A To DC 5V 3.5*1.35mm 4.0*1.7mm 2.0*0.6mm 2.5*0.7mm 5.5*2.1mm 5.5*2.5mm Barrel Jack Power Cable Connector
Re-programmable USB Type-C PD to 2.1/5.5mm Barrel Jack Cable : ID 5501 : $19.50 : Adafruit Industries, Unique & fun DIY electronics and kits
Micro USB Plug to 5.5/2.1mm DC Barrel Jack Adapter - OSA Electronics
USB Port Power Connector to 5.5x2.5mm Male Connector
DC Power Cable, 2.1mm Female to USB A
USB to 2.5mm Barrel Jack DC Power Cable
Tripp Lite U152-003-M, 0.91 m (3-ft.) USB to Type M Barrel Plug cable allows you to power an external 5V DC device by using an available computer USB port. The USB to Type-M Plug cable is perfect for mobile applications, replacing a wall adapter for charging 5V devices.
Tripp Lite 3ft USB to Type M Barrel 5V DC Power Cable Cord U152-003-M
USB 3.1 Type C Male To DC 5.5 X 2.1mm Power Adapter
12V USB Type C Power Cable with 5.5 x 2.5mm Male Output Connector
USB 2.0 A Male To DC 3.5 MM X 1.35 MM Power Cable, Black, 3FT - Pactech
USB to DC 4.0 mm/1.7 mm 5 Volt DC Barrel Jack Power Cable type M
Description This is a simple Type C USB Plug to 5.5/2.1mm DC Barrel Jack Adapter. Use it with our power supplies to adapt it to your needs or to
Type C USB Plug to 5.5/2.1mm DC Barrel Jack Adapter - OSA Electronics
USB to 5.5mm x 2.1mm Barrel Connector 5V DC Power Cable Jack Male, 120cm / 4ft