Hardware:
https://store.ui.com/us/en/category/cloud-gateways-compact/collections/cloud-gateway-max
2TB HDD
M.2 SSD Tray
More Storage:
https://store.ui.com/us/en/category/all-cameras-nvrs/products/unvr-pro
or
https://store.ui.com/us/en/category/cameras-nvr/products/unvr
Cameras:
https://store.ui.com/us/en/category/all-cameras-nvrs/products/uvc-g6-turret (cheaper)
https://store.ui.com/us/en/category/all-cameras-nvrs/products/uvc-ai-dome (expensive)
https://store.ui.com/us/en/category/all-cameras-nvrs/products/uvc-g6-ins
Energy for Camera (PoE - Power over Ethernet):
https://store.ui.com/us/en/category/switching-utility/collections/pro-ultra 8