Licensed Kickstart 3.1 for Amiga 500/500+/600/2000. It is a Kickstart 40.063 (Commodore Edition). You need this to use Workbench 3.1 in your Amiga.
You should replace your old module with new one. It is a specified ROM with label from Cloanto with unique serial number.
Please note: Additional adapter is required for Amiga 500 Rev.5 motherboard and rev 4.2 Amiga 2000 motherboard, it can be purchase here.