All MixWizard4 mixers from Allen & Heath can be fitted with an optional high quality WZ4-USB audio card that will send 16 audio channels to a computer for recording or processing and a return stereo channel for monitoring or effects. The card neatly mounts within the rear pod of the WZ4 mixer and the data is available from a USB2 connector at the rear of the mixer. Switches on either side of the USB2 connector allow the users to change routing options.NOTES:The option card must be installed by a technically qualified service engineer.Some gear shown above are NOT INCLUDED and sold separately. For more information on this and other products, please contact your Sales Pro.FeaturesUSB Send Routing:WZ4 12:2 - Mono channels 1-8 direct out, Aux output 1-6, L/R insert sends or AB out.WZ4 16:2 - Mono channels 1-14 direct out, Mono channels 15-16 direct out or AB out.WZ4 14:4:2 - Mono channels 1-10 direct out, Insert sends group 1-4, Main L/R insert sends or Matrix outputs.SpecificationsThe USB audio option module has selectable sample rates of 44.1kHz / 48kHz / 88.2kHz / 96kHz at 24 bit resolution.The card has been tested with the following operating systems to ensure compatability:Windows XP 32 & 64 bitWindows Vista 32 & 64 bitWindows 7 32 & 64 bitWindows 8 32 & 64 bitOS X 10.5 LeopardOS X 10.6 Snow LeopardOS X 10.7 LionOS X 10.8 Mountain lion Allen & Heath WZ4-USB USB Audio Option Card for MixWizard4.