How to Purchase Power Supply for the PortServer II

I am looking to purchase a replacement power supply for the PortServer II. The Power Supply is an ITE Power Supply, Model Number AP0431-T12, Part Number 10000895 Rev.E

Could you please let me know where can I get 10 or more replacements In South Korea.

You want to contact and ask for a 76000694 - Digi 120-240VAC Power Supply desktop (for Acceleport C/CON, PortServer II 16)