The Checkmate A1500 cases are a re-imagining of the version my company sold in the late 80's. However, they have been brought up to date and with a style to compliment the most beautiful Amiga ever made, the A3000. The Plus is for larger systems or housing real Amiga A500/600/1200 motherboards. However, you can also build a normal PC to run your OS of choice using Micro-ATX in the Plus or Mini-ITX in both cases. IMPORTANT: Please note we are not a dealer but a manufacturer so our shipping times are a lot slower although we try our best. For reference we tend to do two shipments a month unless shipping a lot of stock then once a week. Thanks for your understanding.We also have some great custom FPGA motherboards and Raspberry Pi4 fitting kits for retro fans !!