· This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories,and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com· For use with NEC DSX 40, 80 or 160 KSU Only· 24 Programmable Feature Keys· 10 Speed Dial Keys