I often use Ubuntu Linux, which recognized the device and worked without any additional software. In Windows XP, I did need to download the Option software but that was easily done and it works well.
It was a snap to install; removed my Motorolla RAZR2 SIM, slid it into the GT Express Card, and plugged it into my laptop ; Transfer rates seem faster than when I tethered the phone via USB, either way it's nice not having to completely drain my...
None really, so far. There have been occasional throughput 'quirks' that could be AT&T Network related, particulars within my software configuration, or both