At One Place

USB-C connector size

USB-C connector
8.34 × 2.56 mm
A connector, not a speed — 8.34 × 2.56 mm, reversible.

USB-C describes the physical connector and says nothing whatsoever about speed or capability. The same port can be USB 2.0 at 480 Mbit/s or USB4 at 40 Gbit/s, can carry 5 W or 240 W, and may or may not carry video. This is the single most common source of confusion in the category: two identical-looking cables can differ by a factor of eighty in throughput. USB Power Delivery 3.1 raised the ceiling to 240 W (48 V at 5 A), which is what allows laptops and even some monitors to run from one.

The numbers

Millimetres
8.34 × 2.56
Centimetres
0.8 × 0.3
Inches
0.33 × 0.10
Aspect ratio
3.2578 : 1
Area
0.0000 m²
Defined by
USB-IF

USB

Size Millimetres Inches
USB-C connector ← 8.34 × 2.56 mm 0.33 × 0.10
USB 3.x 5, 10 or 20 Gbit/s depending on generation
USB 2.0 480 Mbit/s, 2.5 W (500 mA at 5 V)
USB4 20, 40 or 80 Gbit/s; USB-C connector only

Common questions

What size is USB-C connector?
A connector, not a speed — 8.34 × 2.56 mm, reversible.
Which standard defines USB-C connector?
USB-IF

Related pages

Sources

  1. Official vendor product documentation — At One Place

How these figures are compiled and checked