A special driver (WinUSB) is needed to access a Topfield TF5800 or TF5810 from a windows pc (the driver that Microsoft automatically selects for you will not work).
The driver, and instructions for it's use, can be obtained from http://www.haselgrove.id.au/antares/z4t.html (basically, one runs z4t.exe and follows the onscreen instructions about when to connect the Toppy).
The same z4t.exe program can be used on pcs running the XP, Vista, Win7 or Win10 operating systems (both 32 and 64 bit)
Extra steps if you are using Win10
By default, Win10 security does not allow "unsigned" drivers to be installed.
This means that extra steps are necessary before running z4t.
My Dell pc uses a product called BitLocker. Basically, the data on the disk is encrypted so that it can't be read in another pc unless one knows the encryption key (8 six digit numbers). If your system uses BitLocker, you will need to manually type your disk's encryption key when the system reboots i.e. print it off before you start! (see below on how to obtain codes).
Note: You probably don't have BitBlocker on your system so you can ignore this bit. If you do have BitBlocker, W10 will warn you that you will need it's codes to continue.
Basically, one has to disable Driver Enforcement to install the driver on a Win10 system. To do this, proceed as follows:
Make sure all "work in progress" files are saved (because the PC will be rebooted)
It is a good idea to download the z4t.exe first and place it in an easy accessible location e.g. the download folder or as a shortcut on the desktop
Type Settings in the "Type here to search" box on the task bar
Click Update and Security
Select Advanced Startup and click Restart Now
(The PC will REBOOT at this point!)
Select Advanced Options(no longer necessary)
Select Startup Settings
The PC will reboot a second time
If necessary, enter your BitLocker 24 digit number
On the Startup Settings screen, press 7 or F7 to disable "driver signature enforcement"
Note: the enforcement will only be disabled for the duration of the next boot i.e. if it doesn't work for some reason then you need to repeat all the above steps before running z4t.
The pc will restart
Obtaining your BitBlocker Code
To determine your BitBlocker code:-
Right click the Start button and select "Windows PowerShell (Admin)"
Type in the following command (note "manage-bde" is one word)
manage-bde -protectors C: -get
Note: On my Win10 desktop, I didn't need to "Run As Administrator"
When z4t is run, windows will tell you that the driver is unsigned (possibly not on XP systems)
You need to select "INSTALL THIS DRIVER ANYWAY"
z4t will tell you whether or not the installation was successful.