B-Stock, MOTU 24 AI, USB 2.0 Audio Interface, AD Converter and Standalone-Mixer, 72 Channels, Sample Rate: 44.1, 48, 88.2, 96, 176.4, 192 kHz, 32-Bit floating point processing, 24 Line-Inputs 3x SUB D-25 and 6x 12-Pin Phoenix, 3x ADAT I/O, Word Clock I/O, LCD Display, Class Compliant USB 2.0 Connection compatible with USB 3 and iOS, Cat-5e Ethernet Connection for AVB Connectivity (up to 5 Motu AVB Units can be connected through optional MOTU AVB Switch), build-in DSP with Mixer Functions for 48 Channels, 12x Stereo bus, 32-Bit floating point processing, modulated analog Equalizer, Vintage Compression, Gate and Classic Reverb, Flexible Matrix for Routing and Splitting, Web Browser Control Function, for Mac OSX 10.8 or higher, incl. MOTU AVB Discovery App for iOS, MOTU AVB Control Web App, AudioDesk 4.0 (Download), Dimension: 19" 1U, B-Stock with full warranty, may have traces of use.