BeagleBone® Black is a low-cost, high-expansion, community-supported development platform for developers and hobbyists. Users can boot Linux in under 10 seconds and get started on development in less than 5 minutes with just a single USB cable. Like its predecessors, the BeagleBone® Black is designed to address the Open Source Community, early adopters, and anyone interested in a low cost ARM® Cortex™-A8 based processor. It has been equipped with a minimum set of peripherals to allow the user to experience the power of the processor and also offers access to many of the interfaces and allows for the use of add-on boards called capes, to add many different combinations of features. A user may also develop their own board or add their own circuitry.

https://www.beagleboard.org/boards/beaglebone-black
Chipset Features
1GHz ARM® Cortex-A8
SGX 3D Graphics Engine
NEON floating-point accelerator
2×32-bit 200-MHz

Board Features
Memory
SDRAM: 512MB DDR3L 800MHZ
Onboard Flash: 4GB, 8bit Embedded MMC (eMMC)
SD/MMC Connector for microSD
Power management:TPS65217C PMIC is used along with a separate LDO to provide power to the system
Debug Support: Optional Onboard 20-pin CTI JTAG, Serial Header
Power Source
miniUSB USB or DC Jack
5VDC External Via Expansion Header
Connectivity
High speed USB 2.0 Client port: Access to USB0, Client mode via miniUSB
High Speed USB 2.0 Host port: Access to USB1, Type A Socket, 500mA LS/FS/HS
Serial Port: UART0 access via 6 pin 3.3V TTL Header. Header is populated
10/100M Ethernet (RJ45)
User Input / Output
Reset Button
Boot Button
Power Button
LED power indicator
4 user configurable LEDs
Video/Audio Interfaces
HDMI D type interface
LCD interface
Stereo audio over HDMI interface
Expansion Interfaces via 2x 46 pin headers
LCD, UART, eMMC
ADC, I2C, SPI, PWM
Compact Size of a Mint Tin