Question: 

What memory can be used for multitrack recording on UI24R?
Seeing the usb medium must be 32 gigs or less, formatted Windows FAT32, and at least 25mbs Write Speed, this is becoming almost impossible to find. What else can be used?

Answer: 

SD AND MICRO SD Memory can be used, in a USB adaptor.
With smaller usb thumb drive memory harder to find, we have had luck using a SD or Micro SD card of that correct size, format, and speed.   Adaptors are available to insert them direct into the USB-A slot on the mixer.  The speed must be UHS-3 or V30.

• An example Micro SD card would be the SanDisk 32GB Extreme microSDHC UHS-I Memory Card V30 Micro SD - SDSQXAF-032G-GN6MA 
• ​An example Micro SD adaptor is the SanDisk MobileMate USB 3.0 microSD Card Reader- SDDR-B531-GN6NN

Note- Most SD and Micro SD memory come formatted exFAT.   You will have to format as FAT32 on a Windows machine.​

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