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The PortaPow USB Power Blocker is a specialized USB-A male to female adapter designed to halt power transfer while maintaining data connectivity. Ideal for applications like 3D printers and Raspberry Pi where power can cause unwanted effects, this adapter disconnects the 5V line while keeping D+, D-, and GND connected for USB 2.0 data transfer. It's a single pack, red, rectangular item with a gold connector, and supports CE specifications. Measuring 4 inches in length, it's compact and convenient for indoor use. Supports data transfer rates up to 480 Mbps.