[Product Contents] * Serial communication cable for CASIO pocket computers 2.5mmφ AUX plug (RS232C) - USB-A Assembled and processed for pocket computers, approximately 15cm + 100cm in length * Instruction manual (homemade) * Computers and pocket computers are not included. * Images are of similar products. [Compatible Models] * FX-870P, VX-4, VX-3 * FX-890P, Z-1, Z-1GR, Z-1GRA [Selling Points] * Handmade product carefully assembled and processed for pocket computers. * Equipped with power/transmit/receive LEDs, allowing you to check the communication status. (You can check if it's working and its current status with the LEDs!) * Driver automatically recognized on Windows 10 and 11. * Communication confirmed with the following applications: Tera Term (Ver 4.106) PB-1000 Data Communicator32 (Ver 1.51) * Installation of web-published files is possible (see images 1 and 3). * Programs can be created on a computer and LOADed, and saved to a computer for backup. * Programs can be created with AI and LOADed. Images are for reference. The communication cable and USB cable will be tested before shipping. It's a handmade product, so the appearance is what it is, but what do you think?