extra features from raspberry pi: SSD power distribution ( 12Vdc x4, 5Vdc USB output x2) external WiFi and GPS, built-in RTC PWM ( for dew heaters) variable output voltage and more.... dimension: roughly the size of a WiFi router to be available in late 2021 price: TBD ( ~250 USD?) if you look for just a dew heater control box by 3D printing, look here TP-LINK USB 3.0 HUB is using a Realtek RTS5411 chip the next gen look a bit similar to RPi CM4 io board , but with extra USB ports and 12V regulated ports: seeeduino: how to customize CM4IO waveshare metal case waveshare rpi usb module, using VLI817 chip 10 popular compute module products . NVMe Ivan kuleshov's blade Raspberry Pi now supports SSD Waveshare Raspberry Pi CM4 PCI-E To M.2 Adapter Card SSD for Compute module IV bilibili