The modem has one USB port that supports USB 1.1 and USB 2.0 in FAT16, FAT32, ext2 and ext3 formats. There are three RJ-45 LAN Ports.
After you use up 200 GB, there is an automatic top-up of $10 for 10GB. After a maximum of 5 auto top-ups, the speed is reduced to 256kbps/256kbps. usage alerts are mailed to you at 50,85 and 100 percent of the plan, and at 85,100 percent of top-up.