How is a 2 Gb/s home connection presented? 10GbE?
edit: here's a list of their supported end-user equipment, they all seem to only have 1 Gbps RJ-45 ports https://www.nuro.jp/device.html
edit2: for the new 10 Gbps service they have self-branded routers with one 10GBASE-T port (and 3 gigabit ports), dunno what hardware it's based on https://www.nuro.jp/news/150601/10g_150601.pdf