Support Information:
Device Type: CD / DVD
Manufacturer: Ultima Electronics Corp.
Model: 52x16c
Interface: USB
Operating System: Windows Vista
Age of Device: < 2 years old
FCCID:

Type of drive: dvd (dvd reader and cd-rom combo)
Location: external
What recording software are you using?: Nero/version

Find it on DriverGuide (http://members.driverguide.com/index.php?action=srch&sm=b&aax=&qa6=1094&qa5=3&qa7=1801&dp=2&qm0=52x16c&jmd=and&fzz=d) | Find it with Google (http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=Ultima+Electronics+Corp.+CD+%2F+DVD++52x16c+Wind ows+Vista+) | Research manufacturer Ultima Electronics Corp. (http://members.driverguide.com/index.php?action=getinfo&companyid=1094)

No driver is required. This device is plug and play in Windows Vista providing you plug it into a working usb port and install compatible 3rd. party dvd decoding software like WinDVD or PowerDVD.

And it might help if you took the time to say what the problem is and include some details.

And "52x16c" is not a model number, it's a speed rating.