DELL™ PRECISION™ TOWER 3620 , TOWER 3420 TECHNICAL GUIDEBOOK15TOWER 3420TOWER 3620Intel® Ethernet Connection I219-LM 10/100/10001 Integrated on system boardIntel 10/100/1000 PCIe Gigabit1 Networking Card Optional card1 This term does not connote an actual operating speed of 1 Gb/sec. For high speed transmission, connection to a Gigabit Ethernet server and networkinfrastructure is required.TOWER 3620 TOWER 3420Realtek ALC3861 High Definition Audio Codec plus ALC1003 AudioAmplifier Integrated on mother boardRealtek ALC3234-CG High Definition Audio Codec Integrated on mother boardInternal Chassis Speaker 100%Dell 2.0 USB powerd Speakers AX210 (Rolling stones) OptionalDell 2.0 USB Soundbar Speakers AC511 (Potentia) OptionalDell 2.0 Multimedia Speaker AC411(Eagles) OptionalDell Professional Stereo Headset UC300(Rihanna) OptionalLogitech C920 Webcam OptionalAUDIO AND SP EAKERSCOMMUNI CATIONS - NET WORK ADAPT ER (NI C)Tower 3620 Tower 3420Intel Rapid Storage Controller 12.0 supporting SATA 6Gb/s (4ports–SATA0, SATA1,SATA2,SATA3) , host based RAID 0/1/5/10 IntegratedIntel Rapid Storage Controller 12.0 supporting SATA 6Gb/s (3 ports–SATA0, SATA1,SATA2) host based RAID 0/1 IntegratedHARD DRI VE CONT ROLL E REXT ERNAL PORTS/ CONNE CTORS (CONT.)NOTE: See chassis diagrams section for port/connector locations. External ports/ connectors at the sameTower 3620 Tower 3420Audio:Line in for microphone 1 FrontLine in for microphone or stereo 1 RearLine out for headphones or speakers 1 Front, 1 Rear