My customer sent me the following.

This is how the TC-70 presents itself over USB in various “Connect to PC” modes:

Mode

Vendor

VID

PID

Config

Interface

Class

Subclass

Protocol

UMS

Symbol

05E0

2100

01

#0

ADB

FF

42

01

#1

Vendor

FF

FF

FF

#2

Vendor

FF

00

00

#3

Vendor

FF

00

00

#4

Vendor

FF

FF

FF

#5

Mass storage

08

06

50

MTP

Symbol

05E0

2101

01

#0

Vendor

FF

FF

00

#1

ADB

FF

42

01

PTP

Qualcomm

05C6

904E

01

#0

Image

06

01

01

#1

ADB

FF

42

01

In PTP mode it claims to be a Qualcomm. For consistency It should be a Symbol.
This will get rid of a gotcha, especially when dealing with connections to Windows machines.