To install the Dell B1160w laser printer on OS X you need to download the Samsung ML-2525w driver.
1. Download the Samsung Driver for OS X from here.
2. Install the software (Printer Driver Installer.app).
3. Open system preferences > printers
4. Add a new printer, your network will pick it up through Bonjour as a Dell B1160w Mono Laser Printer
5. Under the select ‘Use’ box pick ‘Select software’
6. Search for Samsung and select ‘Samsung ML-2525w’
7. Click OK – try to print a test page.