Thanks for the tip but do you have an open source software alternative
If you perform a search for "bandwidth monitor" or similar names, you should find a number of no cost alternatives. I've tried many over the years (no names come to mind), but found that DU Meter trumps every product I've come across. The product doesn't cost much, and the one time cost covers 3 or 5 PCs - I forgot the exact number of PCs, so you'll have to check the product website. Again, you can try a fully functional version of the product for 30 days, so there's nothing to lose.