This is ESP32 Marauder (ESP32 Mar-x-auder) , a suite of WiFi/Bluetooth and tools for ESP32. This board is running on ESP32-2432r028, think of it like a cheaper Flip-x-per Zero. USB-C and Micro-USB Ports, Micro-SD card slot, acrylic case. CYD(Cheap Yellow Display) with 2.8inch, 240 x 380 touchscreen, with driver chip ST7789. To Power on plug it into a laptop, phone charger or powerbank. Kick devices off of WiFi networks, shutdown , monitor network traffic, and more. This enable a secure & reliable wireless. This device functions with or without and SD card, but you 't be to save your work without one. Notice: 1. This link is for ESP32Maruder, not NMMiner, and Marauder has been flashed by default. This device already includes the NMMiner license. If you want to flash NMMiner, please contact customer service. You can flash NMMiner for free from the website provided by customer service. 2. The Micro-SD card (not included). which is required for some of the capabilities of marauder. Note: Please contact customer service if you need operation video material project description. (There are differences in printing screen printing due to different batches, which not affect the use.) Color: As Shown Material: PCB+Acrylic Package Contents: 2 x ESP32 Marauder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.