How long is the Nippon Labs USB-C Full function Extension Cable?

The cable length is 3.3 feet (1 meter).

What is the maximum data transfer speed of the Nippon Labs USB-C Full function Extension Cable?

The maximum data transfer speed is 10 Gbps.

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Nippon Labs USB-C Full function Extension Cable (M/F) - 1 Meter - USB 3.2 Gen 2 (10 Gbps) 4K@60Hz, Thunderbolt 3 Compatible 3.3FT

USB-C Cable Connects Devices for Charging or Transferring Data at 10 Gbps Speeds
Extension Cable Connects Computers, Docks, Smartphones and Other USB-C Devices
PD Charging Cable Supports up to 100W for Syncing and Charging Mobile Devices