This is the 2nd machine. First machine sounded like it was about to take off from my desk (hard drive noise) and there wasn't Wi-Fi capability. Sun Micro quickly shipped a replacement. Wi-Fi USB provided is terrible, and machine is located 20 feet in direct line sight of router. Sluggish operation, has a terrible burning smell when on (possibly the black spray paint getring hot). I wish I would have purchased a new product.