Better active cooling Programmable 30mm fan Improved passive cooling, built-in IR receiver for easy use of media players Added heat sink to the power management chip Better communication with the RP2040 chip Manual or automatic after power outage such as fan speed power management status, just simply set the jumper pins Set power button Located at the back Can perform the following operations via the installation script Allows safe shutdown, restart and force shutdown Cable management, full-size port, neatly placed at the back Supports dual 4k with corresponding colored GPIO pins under the sleek magnetic cover Compatible With: 5 Accessory Type:Cases Fan:PWM programmable 30mm fan Power button:Safe shutdown, reboot and forced shutdown (by script) -compatible port:2 x Full size -compatible ports IR receiver:Bulit-in IR receiver (Due to different batches, the printed words on the product be different, which does not affect use) Colour:Black Material:Aluminum Alloy Package Contents: 1x Metal Case With Built-In Cooling Fan 4x Anti-Slip Pads 2x Thermal Conductive Stickers 1x Screws Kit 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.