Robert, you can restore before you uninstall..there is a restore button under the optimize button.

rww, VDSL, SDSL and ADSL* modems all modulate and demodulate, just the modulation and demodulation schemes are exponentially more complex than simple audio spectrum modems with many layers of encoding error correction and decoding and adaptive multiple frequency channel domains. Nowadays the modems are usually embeded with a multi-port ethernet switch, maybe a small NAS and USB printer server and wireless access point and stateful packet inspection firewall and NAT device. But a real modem that modulates the encoded data over the usable frequency spectrum and demodulates the modulated data from the other ends frequency spectrum is still in there and often can be isolated to act as a dumb modem using PPPOE from a different a connected router.

Donald Wilson, how else do you think you are connected to the internet... even a wifi adaptor is a modem... if you use any *DSL product whatever you plug into the copper pair is a modem... it may also be a router and firewall and switch and wifi access point but it is also a modem. If you have fibre to premisis connection then the interface between your router and the optical fibre is an optical modem it does not have to be a discrete box that plugs in via a RS232 port or USB port... a 3G or 4G or 5G internet wifi access point also contains modem technology for those particular radio frequency standards too.

rww, That thing has been called a LAN modem for some time.

rww, technically *DSL signals are not on/off digital signals but are digital to analogue converted signals with each specific carrier encoded with a variable bit resolution depenant upon signal to noise ratio for that specific carrier frequency and could have many levels encoded in each carrier or simple on/off level for very poor signal to noise ratios. Binary signal encoding is so last century ;) same sort of thing happens with many differnt technologies nowadays e.g SSD with MLC using trinary encoding per memory cell and TLC using quaternary per memory cell and apparently even QLC has been produced that uses the quinary system but these systems all require error correction just to be reliably usable. As does *DSL really.

Joergen, Probably want to set a system restore point and go back to it if you don't like the changes. I don't trust these things personally as the down-sides seem to outweigh the minor up-sides. If you got Soft Organiser Pro from the previous Giveaway that is a good way to see registry changes, but I don't trust it to uninstall stuff as it seems to undo any changes made around that time, rather than just by the installer.

Joergen, there is a settings reset option. However, I used it but it didn't seem to reverse the changes - my broadband speed did not improve after Throttle slowed it down.

JohnL, Since system restore points get routinely overwritten as VSS store space is consumed it can also be sensible to do a real complete system backup before installing this or any program that applies an unknown developers opinion on what critical comunication settings should be.