Yahama Unified Communications › Yamaha RIO3224-D2 High-performance I/O Rack with 32 Analog Inputs 16 Outputs and 8 Digital Outputs Image 1 of 1 Yamaha RIO3224-D2 High-performance I/O Rack with 32 Analog Inputs 16 Outputs and 8 Digital Outputs $10,196.00 Get notified by email when this product is in stock. Quantity: Add To Cart Added!