2 Pin 1.27/1.25mm RTC battery input connector for low power RTC IC HYM8563TSMASK button for eMMC update,one 5V Fan connectorPower supply: USB-C, support PD, 5V/9V/12V inputPCB: 8 LayerAmbient Operating Temperature: 0 to 70SoC: Rockchip RK3568B2CPU: Quad-core ARM Cortex-A55 CPU, up to 2.0GHzGPU: Mali-G52 1-Core-2EE, supports OpenGL ES 1.1, 2.0, and 3.2, Vulkan 1.0 and 1.1, OpenCL 2.0 Full Profile. VPU: 4KP60 H.265/H.264/VP9 video decoder, 1080P60 H.264/H.265 video encoderNPU: Support 0.8TRAM: 4GB LPDDR4XFlash: 32GB eMMCEthernet: one Native Gigabit Ethernet, and two PCIe 2.5Gbps EthernetUSB: two USB 3.0 Type-A portsHDMI-Compatible:support HDMI-Compatible 1.4 and HDMI-Compatible 2.0 operationsupport up to 10 bits Deep Color modessupport up to 1080p@120Hz and 4096x2304@60Hzsupport 3-D video formatsPCIe: M.2 Key M, PCIe2.1 x1, support NVME, PCIe WiFi etcFor SD: support UHS-IGPIO:12-pin 0.5mm FPC connectorup to 1x SPI, up to 3x UARTs, up to 4x PWMs, up to 8x GPIOsFor SD/MMC/SDIO/I2S:2x8-pin 1.27mm connectorCompatible with SDIO3.0 protocolCompatible with SD3.0, MMC ver4.514bits data bus widths1x I2S with 2x SDO and 3x SDIDebug: one Debug UART, 3 Pin 2.54mm header, 3.3V level, 1500000bpsLEDs: 4 x GPIO Controlled LEDs (SYS, WAN, LAN1, LAN2)Colour:BlueMaterial:ABSType: BPackage Contents:1x Complete machineOnly 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.