2pk Q5949X 49X High Yield Black Toner Cartridge for HP LaserJet 1320 3390 3392 | eBay
HP LaserJet 3390/3392 All-in-One Reviewer/Evaluator's Guide
HP LaserJet 3390 and 3392 All-in-One Printer Series - Replace the Toner Cartridge | HP® Customer Support
HP LaserJet 3390 All-in-One Printer Software and Driver Downloads | HP® Support
HP Laserjet 3390 3392 3050 3052 3055 All-In-One Install Setup Driver CD For Mac | eBay
Solved: My Laserjet 3390 no longer offers double sided printing afte... - HP Support Community - 5337539
HP LaserJet 3050, 3052, 3055, 3390 and 3392 All-in-Ones - Install a print driver on a Windows 7 computer (32-bit only) using Windows Vista compatibility mode | HP® Support
User manual HP LaserJet 3050 (English - 430 pages)