WebUSB

- UNOFF

Allows communication with devices via USB (Universal Serial Bus).

Chrome

  1. 4 - 53: Not supported
  2. 54 - 60: Disabled by default
  3. 61 - 125: Supported
  4. 126: Supported
  5. 127 - 129: Supported

Edge

  1. 12 - 18: Not supported
  2. 79 - 125: Supported
  3. 126: Supported

Safari

  1. 3.1 - 17.4: Not supported
  2. 17.5: Not supported
  3. 17.6 - TP: Not supported

Firefox

  1. 2 - 127: Not supported
  2. 128: Not supported
  3. 129 - 131: Not supported

Opera

  1. 9 - 40: Not supported
  2. 41 - 47: Disabled by default
  3. 48 - 110: Supported
  4. 111: Supported

IE

  1. 5.5 - 10: Not supported
  2. 11: Not supported

Chrome for Android

  1. 126: Supported

Safari on iOS

  1. 3.2 - 17.4: Not supported
  2. 17.5: Not supported
  3. 17.6 - 18.0: Not supported

Samsung Internet

  1. 4 - 7.4: Not supported
  2. 8.2 - 24: Supported
  3. 25: Supported

Opera Mini

  1. all: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 80: Supported

UC Browser for Android

  1. 15.5: Supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 126: Not supported

Firefox for Android

  1. 127: Not supported

QQ Browser

  1. 14.9: Not supported

Baidu Browser

  1. 13.52: Supported

KaiOS Browser

  1. 2.5: Not supported
  2. 3: Not supported
Resources:
Google Developers article
Mozilla Specification Positions: Harmful