Features and Geektails
Let's get the basics out of the way, then dive into the technical details. The WET11 is fairly small, having a footprint about an inch narrower than a stack of three CD jewel cases. The supplied single dipole antenna uses a reverse SMA (RP-SMA) connector and is jointed so that it can swivel 360 degrees and lock in 45 and 90 degree positions. You should be able to orient the antenna as desired, no matter how you position or mount the box.
The enclosure has no slots for mounting screws, though, and isn't really what I'd consider stackable, since the four LEDs (Power, Diag, LAN Link/Activity and WLAN Link/Activity) are on the top surface of the box. The single 10BaseT Ethernet connector, Normal / Crossover and Reset switches are all on the rear.
TIP: The Normal / Crossover switch is a welcome inclusion, since it will ensure that you can connect to either a switch / hub port or an Ethernet client device without hunting around for a crossover cable. Just use a normal UTP cable, make sure the device you're connecting the WET11 to is powered up, connect the WET and device together, and move the switch (wait a few seconds between moves) until the LAN light comes on.
The WET is not set up for Power Over Ethernet (POE), so if you're thinking of using it for WISP (Wireless ISP) applications, you'll need to roll your own. There are plenty of ways that you can add POE, including ready-made products like the SMC Power Injector or D-Link DWL-P100 Power Over Ethernet (POE) Adapters, or if you don't mind a little cutting and soldering you can roll your own.
The WET also isn't the only consumer 802.11b / Ethernet bridge available now either. D-Link has its DWL-810 and Hawking its WB320. But the WET11 seems to be the one getting a lot of attention, most likely because it's from Linksys, so let's see what makes it tick...