Use an HSDPA 3G USB adapter with the Asus Transformer TF101

My Asus Eee Pad Transformer TF101 is quite nice to take on a ride. The only issue is that when there’s no WiFi around, there’s no Internet at all. I used to have a Novatel MiFi 2352 3G hotspot but it died. All I have left is a data-only SIM card and an Huawei E220 USB modem.

By default, even with the dock keyboard, plugin the HSDPA USB adapter into the Transformer won’t lead far. But since I can root the Pad and install an alternate ROM, there are every likelihood that I can manage to access Internet via the 3G modem.

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Hercules Wireless Pico USB HWNUp-150 working on OpenBSD

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.
Hurray!