OTG USB-C Power Meter Tester with transparent PC shell. Ultra-compact and portable for easy carry or storage. Plug and play: no driver or software required. Built-in PD chip for safe use and fast charging to protect your original charging cable. Real-time power display: 140W USB-C adapter with LED power display shows charging status and high power activity in real time. The transparent shell lets you see the current charging speed and monitor device status. 140W charging and 40Gbps transfer: Supports 140W (20V 5A) USB power output and PD3.0/QC3.0 charging protocols. Data transfer speeds up to 40 Gbps, enabling quick file transfers and smooth video output for 4K and 8K at 60 Hz. 2-3 practical use scenarios: - Verify charger and cable performance: connect a PD charger and cable to confirm you actually receive up to 140W and observe real time power during charging. - Monitor device charging: use with laptops, tablets, or phones to track charging speed and ensure safe, efficient charging. - Test high-speed data transfers: connect a USB-C storage device or SSD to confirm fast data transfer speeds and compatibility with PD/QC protocols. Includes a USB C Male to Female adapter configuration supporting high power output and fast data transfer.