-RMA samples handling(SATA/USB/SD/eMMC) Analyze RMA issues ,including customer system failure analyzing ,various interface protocol trace analyzing , duplicating fail case and co-work with firmware team and vendor to find the root cause, and design corresponding validation method. -Internal test(SATA/USB/SD/eMMC) Develop tool for QC testing and firmware validation on win/linux. -Software Utility(SATA/USB/SD/eMMC/NVMe) Software utility request form customer or internal usage on win/linux/embedded Linux. -Project 1.SMT Tool: cross-platform ,programmable,integrative automatic testing system on(SATA/SD/eMMC/USB/NVMe) using win/linux DDK, Mircochip controller to integrate all product interface testing function,utility,and QT for cross- platformUI,editable table panel to schedule custom test flow and perform automatic testing. [Environment]: Win, Linux. [Tool]: C/C++, QT, windows/linux DDK,Microchip controller. 2.DVT test:USB QC test on embedded linux. build and set up embedded Linux system,develop all test functionwith bash shell,including control testing chamber to adjust temperature by RS232 port and power supply to perform power-on reset test by LAN port [Environment]: montavista, programmable chamber and power supply. [Tool]: shell script. 3.Card reader :embedded linux tool for custom test and utility(SD/eMMC/USB) modifying UBoot to perform testing function ,utility on ODROID development board.Developing UI on desktop with QT ,using UART and libusb for communicating between desktop and development board. [Environment]: ODROID, UBoot,embedded Linux,UART [Tool]: C,QT,libusb. 4.Card reader ver 2:windows tool for custom utility(SD/eMMC). develop UI by MFC and using win DDK to perform various utility by SCSI over SD/eMMC command lib from Microchip controller. [Environment]: Win, Microchip controller. [Tool]: : C/C++,MFC, win DDK.

- Designing FTL Firmware of USB controller (8051&8bit CPU) for normal flash - Debugging products with logic analyzer and USB protocol or other tools - Porting original code from 8Bits CPU (8051) in Windows (XP) to 32bits CPU (Andes) in Linux (Ubuntu)