Physical Attributes

The serial number is printed on the back of every YubiKey in the 5 Series. The 2D barcode (QR code) of the serial number is also printed on the back of every YubiKey in the 5 Series except the  YubiKey 5C Nano, which is too small to accommodate the 2D barcode.

YubiKey 5 NFC

_images/yk5-nfc.png
  • Dimensions: 18mm x 45mm x 3.3mm
  • Weight: 3g
  • Physical Interfaces: USB, NFC
  • Operating Temperatures: 0 °C - 40 °C (32 °F - 104 °F)
  • Storage Temperatures: -20 °C - 85 °C (-4 °F - 185 °F)

YubiKey 5 Nano

_images/yk5-nano.png
  • Dimensions: 12mm x 13mm x 3.1mm
  • Weight: 1g
  • Physical Interfaces: USB
  • Operating Temperatures: 0 °C - 40 °C (32 °F - 104 °F)
  • Storage Temperatures: -20 °C - 85 °C (-4 °F - 185 °F)

YubiKey 5C

_images/yk5c.png
  • Dimensions: 12.5mm x 29.5mm x 5mm
  • Weight: 2g
  • Physical Interfaces: USB
  • Operating Temperatures: 0 °C - 40 °C (32 °F - 104 °F)
  • Storage Temperatures: -20 °C - 85 °C (-4 °F - 185 °F)

YubiKey 5C Nano

_images/yk5c-nano.png
  • Dimensions: 12mm x 10.1mm x 7mm
  • Weight: 1g
  • Physical Interfaces: USB
  • Operating Temperatures: 0 °C - 40 °C (32 °F - 104 °F)
  • Storage Temperatures: -20 °C - 85 °C (-4 °F - 185 °F)

YubiKey 5Ci

_images/yk5ci.png
  • Dimensions: 12mm x 40.3mm x 5mm
  • Weight: 2.9g
  • Physical Interfaces: USB, Lightning®
  • Operating Temperatures: 0 °C - 40 °C (32 °F - 104 °F)
  • Storage Temperatures: -20 °C - 85 °C (-4 °F - 185 °F)

YubiKey 5C NFC

_images/yk5c-nfc.png
  • Dimensions: 18mm x 45mm x 3.7mm
  • Weight: 4g
  • Physical Interfaces: USB, NFC
  • Operating Temperatures: 0 °C - 40 °C (32 °F - 104 °F)
  • Storage Temperatures: -20 °C - 85 °C (-4 °F - 185 °F)