NanoPi M4 Raspberry Pi Inspired RK3399 Board Launched for $65 and Up
https://www.cnx-software.com/2018/08/24/nanopi-m4-raspberry-pi-rk3399-board/

NanoPi M4 board specifications:

　　SoC Rockchip RK3399 big.LITTLE hexa-core processor with
　　　　2x Arm Cortex-A72 @ up to 2.0GHz, 4x Cortex-A53 @ up to 1.5GHz,
　　　　a Mali-T864 GPU with support OpenGL ES1.1/2.0/3.0/3.1, OpenVG1.1, OpenCL, DX11, and AFBC, and a VPU with 4K VP9 and 4K 10-bit H265/H264 6decoding
　　System Memory Dual-channel 4GB LPDDR3-1866, or dual-channel 2GB DDR3-1866
　　Storage eMMC module socket, micro SD card slot
　　Video Output
　　　　HDMI 2.0a up to 4K @ 60 Hz with HDCP 1.4/2.2 support
　　　　4-Lane MIPI-DSI connector
　　Audio 3.5mm headphone jack, HDMI digital audio output, microphone header
　　Camera one or two 4-lane MIPI-CSI connector (one multiplexed with MIPI-DSI),
　　　　dual ISP up to 13MP
　　Connectivity Gigabit Ethernet, dual band 802.11 a/b/g/n/ac WiFi,
　　　　Bluetooth 4.1 with 2x u.FL antenna connectors
　　USB 4x USB 3.0 ports, 1x USB 2.0 type-C port with OTG mode and power input
　　Expansion
　　　　40-pin GPIO header with 3x 3V/1.8V I2C, up to 1x 3V UART,
　　　　　　1x 3V SPI, 1x SPDIF_TX, up to 8x 3V GPIOs, 1x 1.8V 8-channel I2S
　　　　24-pin extension port with 2x USB 2.0 interface, PCIe x2, 1x PWM
　　Debugging 4-pin UART header (3V 1.5Mbps)
　　Misc Power key, power LED, user LED, 2-pin header for RTC battery
　　Power Supply 5V/3A via USB-C port; RK808-D PMIC
　　Dimensions 85 mm x 56 mm (8-layer PCB)
　　Temperature Range 0℃ to 80℃