1. Connect The UCD3138A Digital Controller Pmbus Connector Of The USB-To-Gpio Adapter For Communication With The Host Pc2. 40-Pin Digital Signal Connector For Connecting Digital Signals To The Power Converter3. 40-Pin Analog Signal Connector For Connecting Analog Signals To The Power Converter4. Led Indicator Light5. Rich Test Points To Facilitate Device Evaluation, System Design, And Circuit And Firmware DebuggingUCD3138ACCEVM149A 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 UseColour:As ShownMaterial:PCBPackage Contents:1 * Development Board ModuleOnly 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.