TL866II Plus is a popular universal programmer used for programming a variety of programmable devices, including microcontrollers, EEPROMs, Flash memory, and other programmable ICs. The TL866II Plus is an updated version of the TL866CS and TL866A programmers, offering additional features and improved compatibility.

Here are some key features of the TL866II Plus:

Wide Device Support: The TL866II Plus supports a wide range of devices from various manufacturers, including microcontrollers, EEPROMs, Flash memory, GALs, PALs, and more.
Built-in ISP Ports: In-System Programming (ISP) capability allows programming of chips without removing them from the circuit board.
Multi-functional: It provides functions such as reading, writing, erasing, and testing various types of chips.
Auto-ID Function: The Auto-ID function can automatically identify the type of chip connected to the programmer.
Software Updates: The manufacturer often releases software updates to support new devices and improve functionality.
User-Friendly Software: The accompanying programming software is usually user-friendly, allowing users to easily navigate and operate the programmer.