YubiKey
Videos
The YubiKey is a collection of hardware authentication devices manufactured by Yubico AB, a company founded in 2007 by Jakob and Stina Ehrensvärd and headquartered in Stockholm, Sweden, with an Americ
The YubiKey Neo-n (left, 2012–2016) and Neo (right, 2012–2018)
The FIDO U2F Security Key (2013–2018)
The YubiKey 4 (left, 2015–2018) and 4C (right, 2017–2018)
USB hardware
Videos
The initial versions of the USB standard specified connectors that were easy to use and that would have high life spans; revisions of the standard added smaller connectors useful for compact portable
Various legacy USB connectors along a centimeter ruler for scale. From left to right: Micro-B plug Proprietary UC-E6 connector used on many older Japanese cameras for both USB and analog AV output Mini-B plug (inverted) Standard-A receptacle (inverted; non-compliant because official USB specifications do not allow for extension cables) Standard-A plug Standard-B plug
Prohibited USB extension cable, plug on the left, receptacle on the right. (USB does not allow extension cables. Non-standard cables may work but cannot be presumed reliable.)
A yellow charge-only "USB" Type-A receptacle and a USB 3.0 Type-A receptacle, both upside-down, on a front panel with card reader
A blue Standard-A USB receptacle without USB 3.0 contacts fitted