This refurbished Dell Latitude E7450-1597 Ultrabook was shipped quickly and arrived 5 days prior to the estimated arrival date. Although previously owned, the cosmetic condition of the unit is excellent. The keyboard had a problem with some keys that 'stuck' or required extra hard pressure. I called the supplier, Renewable Technology Resources, the day after receipt and received excellent customer service. They returned my call within minutes and offered an immediate return/fix/and resend. I appreciated the prompt and attentive customer service and would definitely recommend this supplier for refurbished equipment.