1. Type: Expansion Board 2. Model: for Gpio Expansion Board 3. Specifications: Gpio Expansion Board Features: 1. Easy To Assemble 2. Pin Screen Marking 3. GPIO Function Definition 4. Naming System 5. for Gpio Expansion Board, This Is An Upgraded Version Of The Gpio Expansion Board, Which Can Connect More Devices To The Same Gpio Pin. Applicable To All Models Material: PCB Color as shown Package Contents: 1 x Gpio Expansion Board 1 Set Of Copper Pillar Screw Accessories Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.