It immediately appeared using aplay -l
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card 3: U192k [UMC404HD 192k], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
JACK starts without any issues. USB audio appears to have more inherent latency than a PCI card. Using jack_iodelay with a sample rate of 48kHz and a 64 sample buffer :
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373.710 frames 7.786 ms total roundtrip latency
extra loopback latency: 119 frames
use 59 for the backend arguments -I and -O
This interface is Linux compatible, even if Behringer don't explicitly say that.