Dell 720H2C Personal Computer User Manual


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PCI 32-bit
PCI (SLOT3, SLOT5, SLOT6)
Connector
three
Connector size
124 pins
Connector data width (maximum)
32 bits
Bus speed
33 MHz
PCI Express (SLOT1)
NOTE: If a graphics card is installed in each of the
PCI Express x16 card slots in the dual-graphics
configuration, the PCI Express x1 card slot is not
accessible for use.
Connector
one x1
Connector size
36 pins
Connector data width (maximum)
1 PCI Express lane
Bus throughput
x1 slot bidirectional speed — 2.5 Gbps
PCI Express (SLOT7)
Connector
one x16
Connector size
164 pins
Connector data width (maximum)
8 PCI Express lanes
Bus throughput
x16 slot bidirectional speed — 20 Gbps
PCI Express (SLOT2, SLOT4)
Connector
two x16
Connector size
164 pins
Connector data width (maximum)
16 PCI Express lanes
Bus throughput
x16 slot bidirectional speed — 40 Gbps
Drives
Available devices
Serial ATA drive, floppy drive, memory devices,
Blu-ray™Discdrive,DVDdrive,DVD-RW drive,
CD-RW/DVD combo drive, and media card reader
Externally accessible:
two 3.5-inch drive bays
four 5.25-inch drive bays
Internally accessible:
four 3.5-inch drive bays for hard drives
Connectors
External connectors:
IEEE 1394
front and back-panel 6-pin serial connectors
Network adapter
RJ45 connector
PS/2 (keyboard and mouse)
two 6-pin mini-DIN
USB
two front-panel, six back-panel, and two internal
USB2.0–compliant connectors
System board connectors:
IDE drive
one 40-pin connector
Serial ATA
six 7-pin connectors
Floppy drive
34-pin connector
Fan
three 5-pin connectors
Liquid cooling (optional)
one 12-pin connector
PCI
three 124-pin connectors
PCI Express x1
36-pin connector
PCI Express x16 (SLOT7); card length up to
17.8 cm (7 inches only)
164-pin connector
PCI Express x16
three 164-pin connectors
ControlsandLights
Power control
push button
Power light
green light — Blinking green in sleep state; solid
green for power-on state.
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