3Com 3C39036 Switch 3900, 36-Port 10/100Base-TX RJ45, 1-Port Gigabit Ethernet 1000Base-SX SC MMF, AC Power Supply
Plugable UD-3900 USB 3.0 Dual-Display Docking Stati UD-3900 B&H
3900 Berwick Dr, New Port Richey, FL 34652 | Zillow
DrayTek Vigor 3900 review
Amazon.com: 5V AC/DC Adapter Replacement for Plugable UD-3000 UD-3900 UD-5900 UD3000 UD3900 UD5900 Pro8 UD-PRO8 USB 3.0 SuperSpeed Dual Monitor Video Docking Station USB 2.0 10 Port Hub 5VDC Power Cord :