You should really watch out for a choking hazard with the TP-Link 150Mbps Wireless N Nano Router, model TL-WR702N. This may well be the tiniest Wireless-N router you can find.
Despite its tiny size, the Nano router offers more wireless functions than many regular-size routers. It can be used as a router, an access point, a range extender, or a media bridge. Its best, and default, use is as an access point for those wanting to quickly add wireless clients to an existing wired network, such as that of a hotel room. That plus the ultracompact size makes the router a useful companion for mobile users.
That said, the Nano Router is obviously far from perfect and lacks many things you can find in a full-size router. Considering its current street price of just $21, however, you won't go wrong with it.
Design and features
Measuring 2.2 inches by 0.7 inch by 2.2 inches and weighing just 8 ounces, the square TP-Link 150Mbps Wireless N Nano Router is about the size of a candy bar. And it looks like one, too, with a sleek two-tone plastic cover that comes in white and a mild blue. On one side, the router has an Ethernet port and a standard Micro-USB 2.0 port for charging. The included USB charger, which is relatively compact in its own right, is in fact bulkier than the router itself. The router also comes with a flat network cable neatly curled, ready to be carried when you're on the go.
The router's Ethernet port works either as a LAN port (to connect to a client) or a WAN port (to connect to an Internet source). The only time it works as a WAN port is when the TL-WR702N is being used as a router. When it's used as an access point, range extender, or media bridge, this port acts as a LAN port.
Along these lines, the Nano would be a much better-designed product if it came with a hardware switch, allowing users to quickly change its function. Instead, you have to resort to its Web interface for this. And getting to the router's Web interface will probably be tricky for novice users. More on this below.
However, if you just want to use the Nano in its default function of an access point, setting it up is simple. On the bottom of the device, there's a small label that shows the default wireless work name (or the SSID) and the default password. This information varies from one unit to another and is all you need to use it. Plug the Nano into power, connect its Ethernet port to an existing wired network, such as a switch or a router, and you're ready. All you need to do now is connect wireless clients to its wireless network with the provided information.
Note that the Nano's default setup should also work with most existing cable and DSL modems with DHCP function. If you don't have that type of modem, you'll need to change the Nano to work as a router, which can be a hassle.