(Bridged client mode is the more accurate term. It then shares that wifi network over its LAN ports (leave the WAN port empty). It acts as like a computer connecting to your wifi network. In wireless client mode, the router no longer acts as a router. However, if you can get a DD-WRT-compatible router and upgrade it with DD-WRT firmware, that will give it wireless client mode (though getting it working is a bit finicky). The only cheap one I know offhand which does is is the Edimax BR-6478AC, which occasionally goes on sale for $30. If your Device X is a computer, a USB wireless adapter is the cheaper and easier way to solve this problem.īut if the ethernet port is the only way to get network access to the device, you need to buy another router which supports wireless client mode.