Check the listing for details. Commodore 64 Dead Test & Diagnostic Cartridge & Test Harness Set - USA seller. Listed at 39.19 USD. Commodore 64 Dead Test & Diagnostic Cartridge complete with Test Harness Set. Includes latest Diagnostic software rom: 586220*.Plus free original Commodore Diagnostic software rom! Everything you need to quickly and completely test your beloved Commodore 64. In addition to the 2-in-1 Dead Test & Diagnostic cartridge, this set includes all the necessary dongles to test the following ports:KeyboardSerialBoth joystick controllersUser PortCassette Port Made in the USA. Fully compatible with all Commodore 64 models, including PAL & NTSC versions. Elevate your gaming and computing experience today! Why order from AnyRetro? We pride ourselves on low prices and lightning-fast free shipping, with orders processed and shipped same day.Please don’t hesitate to contact us with any questions or concerns, your satisfaction is our top priority!We are proud of the products we create and supply, we want you to enjoy them just as equally and back that up with a 30-day no hassle money-back refund policy.See the glowing reviews from our many satisfied customers. Please check out our other amazing products!