You can select Contact Us links and find it there. You have to enter in a model of a product then his go. There is a Link to Contact by phone.
Contact D-Link Technical Support
Technical Support
1-800-361-5265
Consumer/Retail Support
English: 24 hours a day, 7 days a week
French: 12:00pm-9:00pm EST, Monday-Friday
Business/Enterprise Support
English: 9:00am-7:00pm EST, Monday-Friday
French: 9:00am-5:30pm EST, Monday-Friday
Customer Service
English: 9:00am-7:00pm EST, Monday-Friday
French: 9:00am-5:30pm EST, Monday-Friday