Chassis dimensions, excluding rack ears and front and back panel knobs and connectors: 9.5" x 7" x 1.75" (24.13cm x 17.78cm x 4.45cm) * Knobs and connectors extend up to 0.5" (1.27cm) from front and back panels, adding 1" (2.54cm) to depth With rack ears attached, * Fits one half of a standard 19" (48.26cm) rack at 1U high6-input, 6-output audio interface for Mac and Windows 6 x 8 physical * Input/output channels: all channels are available simultaneously and operate independently Hybrid FireWire/USB