Rack mount adapters (rack ears / rack mount brackets) are attached to the sides. As this was received from someone else, I do not have detailed knowledge of its operation, and have only confirmed that it powers on. I have not checked the detailed functions, so I am selling it as parts or as junk. Please understand that as a "current condition item / junk item," I cannot guarantee its operation, so please only purchase if you understand this. 16-channel USB analog mixer with built-in effects. ■ Type: Analog mixer ■ Number of mono channels: 8 ■ Number of stereo channels: 4 ■ EQ: Mono ch 3-band (semi-parametric), stereo ch 4-band ■ AUX: 2+1 (built-in FX) ■ Group (bus): 2 ■ Digital effects: 1 ■ Dimensions (W x H x D): 430 x 90 x 355 mm ■ Weight: 4.78kg 5@6