USB - possible hdmi troubles: sometime poor performance converter of audio some hdmi motherboard USB-controller.
Video memory: 64MB, integrated.0/5.1 channel with audio (32,.1, 48KHz, 16-bit, SNR90dB).
Jitter add the noise to output signal of DAC chip.
Add To Compare, what Customers Are Saying.Yes, yes, yes, connectors images, spdif RCA, hdmi spdif optical.Performance of this interfaces enough for real time (with hidden for ears audio Digital Audio Workstation's delays about.5 ms) multi channel input to computer, processing and output to speakers.Audio data passed from buffer with clock rate of the generator. Samples passes to DAC (chip, not device) from the buffer with clock rate of hdmi, synced by video.
In pro applications used external high stable generator (WordClock).
Here we compare hdmi with other digital audio interfaces.
In this case jitter will reduced as capable internal generator.
Fire Wire - possible troubles: incompatibility of connected usb 3.0 to hdmi with audio converter Fire Wire sound card and controller of computer sometime, and obsolete interface.
USB and Fire Wire is most universal interfaces.