Type-C Power Switch for Raspberry Pi 4 - PiShop.us
Amazon.com: ANDTOBO USB Switch Extension Cable, Upgraded USB Extension Cord with On/Off Power Switch Cable for LED Strips, iOS System, etc : Electronics
Sabrent USB 3.0 4-Port Hub with Individual Power Switches
Desktop Power Button with 2 x USB 2.0 Ports
USB Power Switch - PiShop.us
USB Power Switch from 8086 Consultancy on Tindie
Amazon.com: JBtek Male to Female USB Cable with ON/Off Switch - Easy Start/Reboot for Raspberry Pi & Arduino : Electronics
Amazon.com: JBtek Male to Female USB Cable with ON/Off Switch - Easy Start/Reboot for Raspberry Pi & Arduino : Electronics
UCTRONICS Power Switch Cable for Raspberry Pi 4 Power Supply, USB Type C Male to Type C Female Extension Cable with ON/Off Button, 11”, Black
USB Cable with Switch : ID 1620 : $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits