NOT 8500 or 8600 Which Is A SUNON Fan

5V .38A There Are 4 Vent Holes on the cover underneath the fan. Please not there are three versions ofm theis fan. One Is An Adda Fan And Two Are Sunon Ones.

All Dell Laptop Fans Have Been Tested With Fan Testing Equipment. All Are Guaranteed To Be Working Perfectly. All DOA Fans Were Discarded

Upon Close Visual Inspection Of Fans Before Testing And Focusing Close Attention To The Fan Blades. Fan Blades Condition I Would Rate A or A-

Take A Look At My Excellent Feedback's And Buy With Complete Confidence

Summary of My Selling Policies Payment PayPal only, My PayPal Account accepts Credit Cards and Echeck's also Fees No Additional Fees other than Shipping Shipping Shipping will be less than 24 Hours (Except Saturday & Sunday), Sometimes In 15 Minutes If The Timing Is Perfect Delivery After shipping your items will be delivered within 2-5 business days depending on the delivery service speed. Refunds & Returns Items must be returned in the same condition as originally shipped. Contact Me Contact me if you have any additional questions  BUY WITH CONFIDENCE