Acer DC DC221HQwmicz Desktop NVIDIA Tegra K1 Quad-core 2.10 GHz Processor, 4 GB RAM, 16 GB SSD W/Chrome Operating System (Certified Refurbished) This Certified Refurbished product is certified factory refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty. Micro SD Memory Supported BlueTooth 4.0 1 USB3.0 Port, 2 USB 2.0 Ports, HDMI Supported 1 Year Parts and Labor Limited Warranty