美国采购需求：交流直流适配器、LED适配器、LED电源适配器、插头电源适配器、6-12W LED适配器

I'm interested in purchasing a specific type of LED driver/adaptor for my lamp repair business. I'm looking for a high-quality 12V AC/DC adaptor with CE approval, ideally a model that supports 6-12W output. Can you let me know if I can order a single unit, or if there's a minimum order quantity I need to meet? I'm located in Portland, Oregon, and would like to understand the options available for smaller purchases. Thanks!