Check the listing for details. Adafruit Perma-Proto HAT for Raspberry Pi, without EEPROM, 2310. Condition: New. Listed at 17.34 USD. Overview of the Adafruit Perma Proto has for Raspberry Pi: Developed for Raspberry Pi models with 2x20 connection: Zero, A+, B+, PI 2, PI 3 and PI 4. Offers a 0.1 "prototyping hole grid for the assembly of components such as chips, resistances, LEDs and potentiometers. The holes are connected to the conductor on the underside, similar to a cutboard. Arranged current rails for +3V, +5V and GND. Almost all relevant PI pins are led (except PIN #26). No EEPROM, avoids collisions with others. Adaptable through different GPIO header options for different stacking preferences. Some soldering work required to attach the header to the PCB. Not compatible with Raspberry Pi models A or B with 2x13 connection. The color markings for +3V and +5V are blue, GND is red (future versions will exchange these.