CPU and OS: for Allwinner A40I ARM -A7 Quad-core 1.2GHz, /Mate; Memory: 4GB DDR3, 8GB EMMC; Supports SSD hard disk; Storage: 8GB EMMC; Supports SSD hard disk. Communication function: Ethernet port: 1 x 1000M + 1 x 100M ; 2 x RS485 with isolation + 1 x RS232 with isolation console; -6204 is 4 x RS485 + 1 x RS232 + 1 x CAN.4G/5G full network access + WiFi. Extended function module: reserved horizontal expansion capability, various functional modules can be customized and expanded, including:RS485: with isolation;DI: passive input type, module provides 24V isolated power supply;DO: relay output type, NC, COM, NO nodes. AI: 0-5V/4-20mA, two-wire/three-wire input, board provides 24V isolated power supply; AO: 0-5V/4-20mA, two-wire/three-wire output, external 24V isolated power supply; AI+AO: 0-5V/4-20mA, two-wire/three-wire input/output. Power supply: DC: 24V The printing words may be different due to different factory batches, but it not affect the use Color: Blue Material: PCB Package Contents: 1 x -6204 Embedded Single Board Only 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.