The PIC-PG2C is a low-cost serial port programmer that programs PIC microcontrollers without needing an external power supply. It connects to a computer via RS-232 and uses ICPROG software to program supported PIC microcontroller models. Key features include programming via the ICSP interface, supporting various common PIC models, and obtaining power from the RS-232 port for simple operation. Proper RS-232 cable connections and hardware settings are required for use.