Shure BLX24RB58 Wireless Rachmount Handheld Mic with Beta58 H9 100760762 8 channels of AES/EBU outputs

8 channels of AES/EBU outputs and 2 expansion slots for standard Studer D21m I/O cards

AWC15LF is ideal for many applications

the answer is

5" x 3" with hardware to attach to the inside of SKB Shock Rack lids

Shure BLX24RB58 Wireless Rachmount Handheld Mic with Beta58 H9 100760762 8 channels of AES/EBU outputsShure BLX24R B58 Wireless Rack Mount Handheld Microphone System with Beta58 H9 The BLX24R B58 Handheld Wireless System is part of the BLX wireless systems family. Shure BLX Wireless Systems combine professional quality sound with simple setup and an intuitive interface for legendary audio performance right out of the box. Precision built and available in a variety of configurations, it's the most accessible way to own the stage. Includes BLX4R rack