I was about to write down my experiences after I got the Vero 4K together with the USB-Adaptor last week and did quite a bit of testing during the weekend.
Overall I’m really happy with the Vero itself. It works fast and seamless even when using the shipped remote for navigating through the menus when connected to a monitor instead of TV.
BUT said to say that the USB-dongle is definitely not compatible to DVB-T2.
Simply put the used SDR-chip RTL2832 does not support all transmission modes that might be used in DVB-T2, but only the subset known from DVB-T. Comparing the relevant parameters in wikipedia the differences become quite obvious. In Germany for example DVB-T2 broadcast commonly uses LDPC+BCH for FEC, one of the “19/…” guard intervals and a 16k DFT size. In contrast, according to the specs the chip already lacks support for the used DFT size (only 2K and 8K).
To my knowledge the only or at least most known chips for DVB-T2 reception come from Silicon Labs, for instance the Si2157 tuner together with the Si2168 demodulator. These chips are used in various products, for instance the VG0022A from Logilink, CINERGY TC 2 from Terratec or PCTV 292e from Hauppauge.
I will give it a trial to get the Logilink stick working during the weekend for German DVB-T2 according to this post referring to a patch description. Assuming I get this working it would be interesting to know whether these stick(s) will be continuously supported in the future? A brief look into /lib/firmware and kernel drivers suggests that this shouldn’t be a big issue at least.