From NAS-Central Buffalo - The Linkstation Wiki
I did a bit of searching for you. consider using mouser part number 580-WPN20R48S05 in place of the power supply in your LS2. It is a 48 volt to 5 volt dc to dc converter. It would require using a 2.5" drive or a flash card in place of the 3" hard disk. Doing so will make it so your LS2 no longer requires 12 volts. You can then use a standard 48 volt power supply and do power over ethernet. PM me for more info if you want.