Dell Precision Tower 3620 Owner's Manual


  • NOTE: Offerings may vary by region. For more information regarding the configuration of your computer in:
    • Windows 10, click Start Start icon > Settings > System > About.
    • Windows 8.1 and Windows 8, click Start Start icon > PC Settings > PC and devices > PC Info.
    • Windows 7, click Start Start icon, right-click My Computer, and then select Properties.
Table 1. Processor. This section gives you processor information.
Processor type
  • Intel Core i3 series
  • Intel Core i5 series
  • Intel Core i7 series
  • Intel Xeon E3
Total cacheUp to 8 MB cache depending on processor type
Table 2. Memory. This section gives you memory information.
Type DDR4, NECC, and ECC
Speed 2133 MHz
ConnectorsFour DIMM slots
Capacity 4 GB, 8 GB, and 16 GB
Minimum memory 4 GB
Maximum memory64 GB
Table 3. Video. This section gives you video information.
Feature Specification
  • Intel HD Graphics 530 (Core i3/i5/i7)
  • Intel HD Graphics P530 (Select Xeon)
DiscretePCI Express x16 graphics adapter
Table 4. Audio. This section gives you audio information.
IntegratedTwo Channel High Definition Audio
Table 5. Network. This section gives you network information.
IntegratedIntel I219LM Ethernet capable of 10/100/1000 Mb/s communication
Table 6. System information . This section gives you system information.
System chipsetIntel C236 chipset
DMA channelsTwo 8237 DMA controllers with seven independently programmable channels
Interrupt cevelsIntegrated I/O APIC capability with 24 interrupts
BIOS chip (NVRAM)16 MB
Table 7. Expansion bus . This section gives you expansion bus information.
BustTypePCIe gen3 (x16), USB 2.0, and USB 3.0
Bus speedPCI Express:
  • x4-slot each direction speed – 4GB/s
  • x16-slot each direction speed – 16 GB/s
 SATA: 1.5 Gbps, 3.0 Gbps, and 6 Gbps
Table 8. Cards . This section gives you cards information.
PCIUp to one full-height card
PCI Express x4Up to one full-height card
PCI-Express x16Up to two full-height cards
Table 9. Drives. This section gives you drives information.
Externally accessible (5.25-inch drive bay) Two
Internally accessible3.5-inch SATA drive bays2.5-inch SATA drive baysPCIe drive bayM.2 SSD (optional)
TwoFourOne One
Table 10. External connectors. This section gives you external connectors information.
Feature Specification
 Front panelOne universal audio jack with microphone in and headphone connector
 Back panelOne line-out connector
Network adapter One RJ-45 connector
SerialOne 9-pin connector; 16550 C compatible
USB 2.0Front panel: two
 Back panel: two
USB 3.0Front panel: two
 Back panel: four
HDMI outOne
  • 15-pin VGA connector
  • two 20-pin DisplayPort connectors
  • NOTE: Available video connectors may vary based on the graphics card selected.
Table 11. Internal connectors . This section gives you internal connectors information.
Feature Specification
PCI 2.3 data width (maximum) - 32 bits
 Mini TowerOne 120-pin connector
PCI Express x4 data width (maximum) - four PCI Express lane
 Mini TowerOne 64–pin connector
PCI Express x16 (wired as x4) data width (maximum) - four PCI Express lanes
 Mini TowerOne 164-pin connector
PCI Express x16 data width (maximum) - 16 PCI Express lanes
Serial ATA 
 Mini TowerFour 7-pin connectors
 OptionalGen 3x4 Slot
MemoryFour 288-pin connectors
Internal USB 
 Mini TowerOne 20-pin connector
System fanOne 4-pin connector
Front panel control 
 Mini TowerOne 6–pin and two 20–pin connector
Mini Tower – thermal sensor One 2-pin connector
ProcessorOne 1150-pin connector
Processor fanOne 4-pin connector
Service mode jumper One 2-pin connector
Password clear jumper One 2-pin connector
RTC reset jumperOne 2-pin connector
Internal speakerOne 4-pin connector
Intruder connectorOne 3-pin connector
Power connector:One 8-pin. one 4-pin,
Table 12. Controls and lights . This section gives you controls and lights information.
Feature Specification
Front of the computer
 Power button lightWhite light — Solid white light indicates power-on state; blinking white light indicates sleep state of the computer.
 Drive activity lightWhite light — Blinking white light indicates that the computer is reading data from or writing data to the hard drive.
Back of the computer
 Link integrity light on integrated network adapter Green — a 10 Mbps connection exists between the network and the computer.
 Green — a 100 Mbps connection exists between the network and the computer.
 Orange — a 1000 Mbps connection exists between the network and the computer.
 Off (no light) — the computer is not detecting a physical connection to the network.
 Network activity light on integrated network adapterYellow light — A blinking yellow light indicates that network activity is present.
 Power supply diagnostic lightGreen light — The power supply is turned on and is functional. The power cable must be connected to the power connector (at the back of the computer) and the electrical outlet.
Table 13. Power. This section gives you power information.
Power WattageMaximum heat dissipationVoltage
Mini Tower:290 W989.00 BTU/hr 100 V AC to 240 V AC, 50 Hz to 60 Hz, 5.4 A
 365 W EPA1245 BTU/hr 100 V AC to 240 V AC, 50 Hz to 60 Hz, 5.0 A
  • NOTE: Heat dissipation is calculated by using the power supply wattage rating.
Coin cell battery3 V CR2032 lithium coin cell
Table 14. Physical dimension. This section gives you physical dimension information.
Mini Tower360.00 mm (14.17 inches)175.00 mm (6.88 inches)435.00 mm (17.12 inches)11.70 kg (25.70 lb)
  • NOTE: The weight of your computeris based on a typical configuration and may vary with different configurations.
Table 15. Environmental. This section gives you environmental information.
Temperature range
 Operating5°C to 35°C (41°F to 95°F)
 Storage–40°C to 65°C (–40°F to 149°F)
Relative humidity (maximum)
 Operating20 percent to 80 percent (non-condensing)
 Storage5 percent to 95 percent (non-condensing)
Maximum vibration
 Operating0.26 GRMS
 Storage2.20 GRMS
Maximum shock
 Operating40 G
 Storage105 G
 Operating–15.2 m to 3048 m (–50 to 10,000 ft)
 Storage–15.20 m to 10,668 m (–50 ft to 35,000 ft)
 Airborne contaminant levelG1 or lower as defined by ANSI/ISA-S71.04-1985

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