Welcome to this listing for a Universal Audio UAD-2 Satellite QUAD Firewire DSP Accelerator in good condition, complete with Apple Firewire to Thunderbolt adaptor and the Analog Classics plug-ins bundle! Please note that this unit is NOT compatible with Apple Silicon Macs. The Universal Audio UAD-2 Satellite QUAD is a powerful external Firewire DSP Accelerator that allows you to run UAD-2 Powered Plug-ins on your Mac or PC, giving you access to world-class analog emulation plug-ins from Universal Audio. The Satellite Duo features four SHARC processors, providing you with plenty of power to run multiple plug-ins simultaneously. This unit is perfect for producers, engineers, and musicians looking to enhance their audio production capabilities without upgrading their entire computer setup. The Satellite Duo is compatible with popular DAWs such as Pro Tools, Logic, Cubase, Live, and more. Can be used with Thunderbolt 3 with the addition of a Thunderbolt to Thunderbolt 3 adaptor (not included). Please note that this unit is not compatible with Apple Silicon Macs. This UAD-2 Satellite QUAD Firewire is in good condition, with only minor signs of wear from normal use. It has been thoroughly tested and is fully functional, ready to provide you with top-notch audio processing capabilities. Included in the sale. 1x Universal Audio UAD-2 Satellite QUAD Firewire DSP Accelerator. 1xApple Firewire to Thunderbolt adaptor (Original). 1x Analog Classics Plug-ins Bundle (included with registration). You will need to register the device with Universal Audio to access the Analog Classics Plug-ins Bundle. Note this unit is not compatible with Silicon Macs. See UAD website for more information on compatibility. Please feel free to contact me with any questions or concerns.