The USBasp 3.3V 5V Programming Device (incl. ISP Adapter and Cable) is a USB based ISP programmer designed for Atmel AVR microcontrollers and other compatible targets. It provides selectable target voltages of 3.3V or 5V and ships with an ISP Adapter and cable for immediate use with AVR development boards and projects. This item is listed under the model USbasp 9 ISPAdapter. Key benefits Easy in system programming via USB connection, enabling quick firmware updates on compatible AVR microcontrollers. Dual voltage support lets you match the target device requirements with 3.3V or 5V operation. Includes an ISP Adapter and Cable, giving you the hardware needed to connect to standard ISP headers without additional accessories. Broad compatibility with Atmel AVR devices and other targets that support the ISP protocol. Compact and portable for bench work, field service, or on the go programming tasks. Works with common workflows used for USBasp devices, providing a straightforward path from PC to target MCU. Key attributes Functionality: USBasp USB ISP programmer with selectable target voltage 3.3V or 5V and included ISP Adapter and Cable. Compatibility: Designed for Atmel AVR microcontrollers and other devices compatible with the ISP programming protocol. Package contents: USBasp 3.3V 5V Programming Device, ISP Adapter, and Cable. Interface: USB based programmer for in situ microcontroller programming. Model reference: USbasp 9 ISPAdapter. Voltage selection: 3.3V or 5V target voltage option to suit different devices. Use cases Bootloader installation or update on AVR development boards such as microcontroller families built around Atmel AVR devices. Reflashing firmware on AVR based projects when on board programming is required or a standard programmer is preferred for reliability. In production or settings, reprogramming standalone AVR microcontrollers or modules that use the ISP protocol to restore functionality or update firmware. Notes This description reflects the product as titled: USBasp 3.3V 5V Programming Device incl ISP Adapter and Cable, USB ISP Programmer for Atmel AVR and more USbasp 9 ISPAdapter. It emphasizes the core capabilities and components included without introducing additional specifications not present in the title.