2.5mm 4-Pole TRRS Audio Plug Terminal Block

SparkFun Qwiic Pro Micro BoogieBoard

Qwiic-connected ATmega32U4 development board variant. It belongs near Qwiic/dev-board comparisons, not passive connector swaps.

9V to Barrel Jack Adapter

Passive 9 V battery to 5.5 × 2.1 mm center-positive barrel adapter. Check that the target board accepts 9 V barrel input.

SparkFun 16x2 SerLCD - RGB Backlight (Qwiic)

Serial/Qwiic LCD module. Qwiic connector helps wiring, but the part is a display module with firmware and address assumptions.

MicroUSB Plug to 5.5/2.1mm DC Barrel Jack Adapter | Kiwi Electronics

Passive MicroUSB to 5.5 × 2.1 mm barrel adapter. Connector conversion only, not voltage conversion or regulation.

Micro SD Card Adapter for Raspberry & Macbooks - Black

Physical microSD card adapter for Raspberry Pi and MacBook-style slots. Compare fit and card support, not power or I²C details.

Micro SD Card Adapter for Raspberry & Macbooks - Blue

Same microSD adapter class as the black Seeed listing, with color/variant differences rather than a different electronic role.

2.5mm 4-Pole TRRS Audio Jack Terminal Block

Adafruit 12-Channel 16-bit PWM LED Driver - SPI Interface [TLC59711]

Adafruit CH9328 UART to HID Keyboard Breakout

Adafruit FPC Breakout for Raspberry Pi 5 DSI or RP2350 HSTX

Adafruit Reversible USB Type A Plug Connector Breakout

Adafruit Sunken USB Type C Breakout Board - Downstream Connection

Adafruit Switchable USB Type A to C Breakout Board

Adafruit TRRS Jack Breakout Board

Adafruit USB Type C Breakout Board, Downstream Connection

Adafruit USB Type C CC Resistor Fixer

Adafruit USB Type C Vertical Breakout - Downstream Connection

USB Micro-B Breakout Board