1. Connect The UCD3138A Digital Controller Pmbus Connector Of The USB-To-Gpio Adapter For Communication With The Host Pc 2. 40-Pin Digital Signal Connector For Connecting Digital Signals To The Power Converter 3. 40-Pin Analog Signal Connector For Connecting Analog Signals To The Power Converter 4. Led Indicator Light 5. Rich Test Points To Facilitate Device Evaluation, System Design, And Circuit And Firmware Debugging UCD3138ACCEVM149A is a 32kbFlash ucd3138A chip with synchronous rectification. UCD3138064AEVM149A is a 64kbFlash ucd3138064A with synchronous rectification. UCD3138ACCEVM149A and UCD3138064AEVM149A are the upgraded models of ' ucd3138 chips with domestic boards, with stronger power supply capability. ucd3138ACCEVM149 chips and boards are , and the programs of 149 and 149A are common, the interfaces are common, and the circuits are common. Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:As Shown Material:PCB Package Contents: 1 * Development Board Module 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.