Overview PoE UPS Uninterruptible Power Supply Base Board/Mini-Computer designed for Raspberry Pi Compute Module 4, Gigabit Ethernet, Dual HDMI, Quad USB 2.0 Package Contains CM4-POE-UPS-BASE x1 Aluminum alloy case (top and bottom) x1 Fan x1 12V 2A Power Supply x1 Screwdriver x1 For more details you may need to know, pls firstly send me message via, I will then send attached document including User Guide for you, thank you for patience.; D