This software is available only with the printers which have the mark on the nameplate label on the back of the TM-C35x0.
Please see the below "How to check Marking" file about the mark.
How to check marking
And this software is available for the product with the following firmware versions. The firmware version except:WAD30200,WAD30100,WAD20200,WAD20100,WAD20000,WAD10200
Also please read the following "Support firmware version.pdf" file about the firmware version the each driver supports.
Supported firmware version

[Support model]
TM-C3500(Firmware Ver.WAM10100 or later)
TM-C3510(Firmware Ver.WAM10100 or later)
TM-C3520(Firmware Ver.WAM10100 or later)

[Support interface]
Ethernet

[Support OS]
Windows 10 Ver.1703(32bit/64bit)
Windows 10 Ver.1607(32bit/64bit)
Windows 10 (32bit/64bit)
Windows 8.1 (32bit/64bit)
Windows 8 (32bit/64bit)
Windows 7 SP1 (32bit/64bit)
Windows Server 2016
Windows Server 2012 R2
Windows Server 2012
Windows Server 2008 R2 SP1
Windows Server 2008 SP2 (32bit/64bit)

[Restrictions]
If SAP EH&S WWI HVP System is not used, HVP plug-in for TM-C3500 Series cannot be used.