Huge channel count, no less than eight AUX out, ten combo XLR/TRS and ten XLR preamps. Two of the TRS can be switched to Lo-Z for instrument use. A RCA (cinch) L-R input pair (making up the 24 analogue input channels). Fully patchable internally. A whopping 32-in and 32-out USB interface. Playback from USB. Recording 24 tracks to USB. Web server built in. WiFi hotspot built in. Ethernet connectivity. That's a huge amount to pack into a 4U rack unit (and it's not deep).
Some weirdness - USB sockets only offer 40mA - this means that powered USB hub is a must. All USB storage must be FAT32 - unless you know what you're doing, you'll hit limits very quickly. Any USB media must be fast enough to write 24 channels of audio while recording. The networking is a bit idiosyncratic too - you'll need to be comfortable with TCP/IP, and WiFi configurations and networking concepts generally to master this device.
But I'm very happy with my Ui24R.
The package has arrived thank you for your ongoing assistance throughout the
purchase and shipment. You and your team have been most helpful.