The angle bracket allows to easily mount a i2c OLED display onto a Raspberry Pi compatible GPIO. It has been tested with the following boards:

- Raspberry Pi 4B
- Raspberry Pi Compute Module 4 with
   - Waveshare - Mini Base Board (A) Designed for Raspberry Pi Compute Module 4 (CM4-IO-BASE-A) - https://amzn.to/3MqSDPz
   - Waveshare - Raspberry Pi Compute Module 4 IO Board With PoE Feature, for all Variants of CM4 (18606) - https://amzn.to/3OBno6K
   - DFRobot - PiTray mini for Raspberry Pi Compute Module 4 - https://bit.ly/42XD09a
   - Raspberry Pi - Compute Module 4 IO Board - https://amzn.to/3MrqpDY
   - UP Board - UP4000 - UP 4000 – UP Bridge the Gap (up-board.org)
   - Banana Pi - BPI-CM4 computer module and development base board - https://amzn.to/42RHxKc and Banana Pi BPI-CM4 - Banana Pi Wiki (banana-pi.org)

The 90° angle makes it easy to connect  

- Ground (GND)  - GPIO pin 6
- VCC (3V Power) - GPIO pin 1
- SCL1 I2C- GPIO pin 5
- SDA1 I2C  - GPIO pin 3

The bracket is compatible with 128x32 OLED displays (https://amzn.to/41TV1D) with the following pin order (top to bottom):

- SDA
- SCL
- VCC
- GND