Unfortunately, the Broadcom BCM4315 wireless adapter from the Dell Inspiron Mini 10 is not supported by OpenBSD (as of 5.0). So I looked for a wireless USB adapter. First I looked at my favorite online shops to see what was available. Then I searched for the chipset of the adapter I’ve selected.
The Hercules Wireless N USB Pico (HWNUp-150) looked perfect as it is really small. Having a look at
urtwn(4), I read that, in theory, this adapter should work. In practice, it does:
urtwn0 at uhub0 port 3 "Realtek 802.11n WLAN Adapter" rev 2.00/2.00 addr 2 urtwn0: MAC/BB RTL8188CUS, RF 6052 1T1R, address xx:xx:xx:xx:xx:xx
Configured for WPA2, it’s up and running.