The software provided explicitly does not work with NT 4 even though the box claims the drive supports NT 4. I tried to call their tech support number about 6 times to find out what alternative software I could use. Each time there was hold music for 30 minutes followed by a message saying to email them, and then they disconnected me. I don't think they actually have anyone manning the phones. I finally returned the drive. I'll never buy another Sony drive.