Yes but I suspect it does not do what you think it does.
This type of router does not let you combine the connections to increase the bandwidth in the way most people want. Say you have 2 2m circuits. It is not possible to watch a netflix movie that needs 4m but you can use both connections at the same time to watch 2 2m movies.
Even then these routers can only do so much there are many site that will cause trouble. A example say is a gaming site. It has a login server and a bunch of game servers. If it would use connection 1 to go to the login server and then use connection 2 to go to the game server the game company would detect this as hacking because you are coming from 2 different IP addresses.
The router can not possibly know these relationships between servers in the internet. Even in normal web pages data is coming from many servers even though you only typed in a single url name. You can to a point configure this in the router but it quickly becomes tedious.
What most cheap load balancers do is say computer 1 in your house always uses connection 1 and computer 2 in your house always uses connection 2. It means many times one connection may be over used and the other idle.
This is why companies like bigip can sell $10,000 F5 load balancers. Even these can not solve all the issues with out some custom configuration.