It's necessary to identify if you are planning to use the DISH Slinglinks or the Sling Media SlingLinks. Have a look at this link,
These products are sold and supported by DISH Network. If you have questions or need support for these products, contact DISH Customer Support at 1-888-686-2388.
Here you can find information about the SlingLinks TURBO (sold by Sling Media)
Hope this helps