Good product
It's an interesting format, and can be placed vertically to save space.
The only drawback is that this modem has a little more difficulty than the operator's box in ADSL2+ modulation (line a little unstable at this level), so I lose a little bit in speed. But 1MBps less is not a big difference :).
Handles dual-Wan without any problem, but it's better to go for more powerful models if you want to go beyond 100Mbps.
No Openwrt OS for this model.