If you only have one singnet account and two wireless router,
you can only use one wireless router. FIY, having two wireless
router will not increase the speed of your internet. If you have a
big house, then it will be great to have two wireless router at
thome to improve the connections at home. But you will need to lay
LAN wires to connect the two wirelsss router together and configure
them properly. Else, just keep the other router as spare.