T1 and T2 are USB dongles which plug into a Windows PC or laptop. See minimum PC specifications for details of the PC requirements. Both dongles include an AvoKey.
T1 provides a single universe of DMX output on a 5-pin XLR. USB-MIDI devices are not supported.
T2 provides two universes on two 5-pin XLRs and has an input for Audio/LTC timecode for external triggering. It also enables the use of a USB MIDI device for MIDI triggering of Titan, which for example would allow you to use a MIDI fader surface, and also allows use of the Titan Mobile fader wing.
Install the Titan PC Suite software on your PC (see Connecting up Titan Mobile and T1/T2) before you plug in the dongle, to make sure the correct drivers are installed.
The older cabled version of the Titan One dongle does not include an AvoKey; a separate AvoKey must be attached to another USB port on your computer to allow use of Titan v12 and later.
The T1 and T2 devices use a special version of the Titan software called Titan Go. The operating screen is slightly different to the normal display as it is designed for use on a touchscreen with no physical control surface (actual faders or buttons).