Rock Pi 4 Model A 4GB (without WLAN/Bluetooth and PoE) Rockchip RK3399Processor64bit6-core
Dual Cortex-A72 with 1.8Ghz Quad Cortex-A53 with 1.4Ghz
GPU
Mali T860MP4 GPU, supports OpenGL ES 1.1 /2.0 /3.0 /3.1 /3.2, Vulkan 1.0, Open CL 1.1 1.2, DX11.
Memory LPDDR4
4GB 64bit dual channel LPDDR4@3200Mb/s, 4GB
Storage eMMC module
Optional industrial-grade high-performance eMMC module, 8G/16G/32G/64G/128G available
Micro SD card
uSD slot supports up to 128G uSD cards
M.2 SSD
M. 2 port supports up to 2T M.2 NVME SSD
display HDMI
HDMI 2.0 up to 4k@60
peripherals
MIPI DSI 2 lanes via FPC connector
HDMI and MIPI DSI works simultaneously, supports mirror mode and extend mode.
Audio 3.5mm jack with microphone support
HD codec, supports up to 24-bit/96kHz Audio
camera MIPI CSI
MIPI CSI 2 lanes via FPC connector, supports up to 800MP cameras
USB 3.0 OTG x1
Hardware switch for host/device switch, above
USB 3.0 HOST x1
dedicated USB3.0 channel, below
USB 2.0 HOST x2
LAN
GbE LAN
IO 40-pin Expansion header:

• 1 x UART
• 2 x SPI bus
• 2 x I2C bus
• 1 x PCM/I2S
• 1 x SPDIF
• 1 x PWM
• 1 x ADC
• 6 x GPIO
• 2 x 5V DC power in
• 2 x 3.3V power pin
Other
RTC battery connection for time backup (optional)
Power USB PD
Support USB Type C PD 2.0, 9V/2A, 12V/2A, 15V/ 2A, 20V/2A
Power Supply Qualcomm® Quick Charge™
Support QC3.0/2.0 Adapter, 9V/2A, 12V/1.5A
Dimensions 85mm x 54mm