These are desktop systems with no ports for standard peripherals. Almost every mouse and keyboard out there still requires USB-A, so now you need some sort of adapter to use the thing.
The new Lenovo SFF RTX Spark mini PC features a minimalist dual-tone design, but lacks the front-facing I/O found on Dell's rival RTX Spark mini PC. The Nvidia RTX Spark on board promises up to 128 GB of RAM, 300GB/s of memory bandwidth, 12K video editing capabilities, and up to 1 petaflop of AI performance.