“Says built in Wi-Fi. Does that mean it úses a USB wi_fi antenna that plugs into a USB port? Also, does this come with wireless keyboard and mouse?”

Dell - Refurbished Excellent - Optiplex 7060 SFF Desktop PC, Intel Core i7-8700 up to 4.6GHz, 32GB DDR4 RAM, 1TB NVMe SSD, Built-in WiFi, Win11Pro - Black