Looks like this was human error as I have satap cable where nsa310 do not have power so has just esata without P(ower)by SirK79 - Debian
What is the best way to determine which version I have ? Console reports: U-Boot 2013.07 (Sep 20 2013 - 15:45:03) ZyXEL NSA310 1-Bay Power Media Server SoC: Kirkwood 88F6281_A1 DRAM: 256 MiB WARNING: Caches not enabled NAND: 128 MiB In: serial Out: serial Err: serial Net: egiga0 PHY reset timed out MV88E1318 PHY initialized on egiga0 and root@nsa310:~# lsby SirK79 - Debian