I have remotely checked customers 8GB pen drives and have found following details -
Description: [F:]USB Mass Storage Device(VendorCo ProductCode)
Device Type: Mass Storage Device
Protocal Version: USB 2.00
Current Speed: High Speed
Max Current: 100mA
USB Device ID: VID = 346D PID = 5678
Serial Number: 1338851196940059341
Device Vendor: USB
Device Name: Disk 2.0
Device Revision: 0200
Manufacturer: VendorCo
Product Model: ProductCode
Product Revision: 2.00
Controller Vendor: FirstChip
Controller Part-Number: FC212T
Flash ID code: 989476042020 - KIOXIA - 1CE/Single Channel [MLC]
Tools on web:
http://dl.mydigit.net/search/?type=all&q=FC212TPossible Flash Part-Number
----------------------------
Unknown
Flash ID mapping table
----------------------------
[Channel 0] [Channel 1]
989476042020 --------
1A2B3C4DE5D4 --------
183800000000 --------
-------- --------
989476042020 --------
-------- --------
-------- --------
-------- --------
Volume: F:
Controller: Unknown
Possible Memory Chip(s): Not available
VID: 346D
PID: 5678
Manufacturer: USB
Product: Disk 2.0
Query Vendor ID: VendorCo
Query Product ID: ProductCode
Query Product Revision: 2.00
Physical Disk Capacity: 8053063680 Bytes
Windows Disk Capacity: 8036253696 Bytes
Internal Tags: AB3X-QAG4
File System: FAT32
Relative Offset: 32 KB
USB Version: 2.00
Declared Power: 100 mA
ContMeas ID: 8F7F-02-00
Microsoft Windows 10 x64 Build 19045
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http://www.antspec.com/usbflashinfo/Program Version: 9.4.0.645
I am unable to identify which is mcu and tool I can try.