-Specification-
 CPU: Model: Rockchip RK3399
 Number of Cores: 64-bit Dual Core Cortex-A72+ Quad Core Cortex-A53
 Frequency: Cortex-A72(up to 2.0GH z), Cortex-A53(up to 1.5GH z)
 GPU: Mali-T864 GPU, supports OpenGLR ES 1.1 / 2.0 / 3.0 / 3.1, OpenCL, DX11, and AFBC
 VPU: 4K VP9 and 4K 10bits H265/H264 60fps decoding, Dual vOP, etc
 Power ManagementRK808-D PMIC, cooperated with independent DC/DC, enabling DVFS, software
 power-down, RTC wake-up, system sleep mode
 Memory: RAM: 4GB LPDDR4
 Storage: Flash: no Onboard eMMC
 MicrosD Slot: MicroSD x1 for external storage up to 128GB
 Connectivity: Ethernet: Native Gigabit Ethernet x1
 PCle Gigabit Ethernet x1
 USB: USB 3.0 Host x2: USB Type A
 USB 2.0 Host x 1: 2. 54mm 4pin-header
 Type-C x1: Power Input Only
 Fan: 5V Fan connector
 Working Temperature: -20° to 70°
 Power: DC 5V/3A, via USB-C connector or Pin header
 -OS/Software-
 FriendlyCore 20.04 (64-bit)(Linux- 4.19. 111 + U-boot- 2017.09 )
 FriendlyWrt 19.07. 4(64-bit)(Linux- 5.4. 75 + U-boot- 2017.09 )
 -Dimension-
 PCB: 8 Layer
 Dimension: 66 x 66 mm
 Weight: 40.90 g (with Metal Case 310g)
 -Package Content-
 NanoPi R4S 4GB RAM with Metal Case * 1 (Standard Version-Without MAC chip)