You need to find out rather or not the vendor has photographs available of the product they are selling. When you're shopping in person, you have the option to look at items close up, hold them in your hand, and study their texture. When you're shopping Fh-10 10-Port 3pin/4pin Cooling Fan For Sata Power Supply Chassis Cooling Fan Hub Pwm Distributor online, photos are the closest thing to this there is. I would not advise buying from any over the internet goods shop that doesn't exhibit pictures of the product. It is advisable to research the online goods shop's shipping policy. How much can shipping be? Is it free of charge? If it's free, will it take an eternity to arrive? If I need to pay for it, when can I expect my purchase to arrive? These are all things you as a consumer should know, and you can usually easily find the answers to these questions simply by find a "Shipping Policy" or perhaps "FAQ" page on the site. Previous, but certainly not least, you must find out what forms of payment this website accepts. This seems like it might be obvious, but I simply can't even count the times that I've found a wonderful quality item on a site, only to find away that they don't accept one of the forms of payment I have obtainable.