This is a refurbished unit. Each refurbished unit has been tested and certified by our technical services team to ensure that it is in full working condition. The unit may have some minor cosmetic signs of use, but is in overall good condition.The VX 520 is a reliable, rugged countertop device that's built to last. It handles encryption, decryption and processing at lightning speeds with a powerful processor and expandable memory. Integrated NFC capabilities support alternative payments and value-added applications such as loyalty or gift card acceptance.