Universal Audio UAD SYSTEM ver.6.3.2 - Manual (Page 65)

UAD System Manual - 65 - Chapter 6: UAD Meter & Control Panel
Current Link
Speed
The current speed of the FireWire link between the host computer and UAD-2
Satellite and/or Apollo is displayed here. The active link speed can be
changed with the
Target Link Speed control if FW400 and FW800 are both
supported by the host system.
If the host computer has multiple FireWire buses (this is rare), up to two speeds
will be displayed, with the values separated by a comma.
Figure 13. The UAD FireWire panel