Unbranded "240W 40Gbps" marketplace cable

fake

Illustrative example — the live database is built from real user-submitted reports.

E-MARKER READOUT

vendorUnregistered

vendor id / product id0x0000 / 0x0000

usb-if registeredno

e-markerpresent

max data rateUSB 2.0 (0.48 Gbps)

max power240 W · 5 A

What this means

Zeroed vendor ID, not USB-IF registered, no certification VDO. Claims 240 W/40 Gbps that the e-marker and construction do not support.

Cablyst reads these fields from a cable's e-marker as reported to macOS — including USB-IF registration and Power Delivery limits. Check your own: run the free checker or get Cablyst Pro.