Dell Optiplex-620 - Page 143

Drives
two serial ATA controllers supporting one device each
and one parallel Ultra ATA/100 IDE supporting two
devices per channel with one channel

Expansion Bus
Bus type
PCI 2.3
SATA 1.0a and 2.0
USB 2.0
PCI Express 1.0a
Bus speed
PCI: 33 MHz
SATA:1.5Gbpsand3.0Gbps
USB: 480 Mbps
PCI Express x1: 5 Gbps
PCI Express x16: 80 Gbps
Cards
half-length, full-height cards supported with optional
riser-card cage
Default: no riser-card cage
low-profile cards supported
PCI

connectors
two
card size
low profile
connector size
120 pins
connector data width
(maximum)
32 bits
PCI Express

connectors
one x16
card size
low profile
power
25 W maximum
connector size
120 pins (x16)
connector data width (maximum)
16 PCI Express lanes (x16)
Optional: full-height PCI Express riser-card cage
low-profile and full-height cards supported
PCI

connectors
two
card size
one low-profile card and one full-height card
connector size
120 pins
connector data width
(maximum)
32 bits
PCI Express

connectors
one x16
card size
full-height
power
25 W maximum
connector size
120 pins (x16)
connector data width (maximum)
16 PCI Express lanes (x16)
Optional: full-height PCI riser-card cage
low-profile and full-height cards supported
PCI

connectors
three
card size
one low-profile card and two full-height cards
connector size
120 pins
connector data width
(maximum)
32 bits

Drives
Externally accessible
one 3.5-inch drive
one bay for CD/DVD or optional second hard drive
Internally accessible
one bay for a 1-inch-high hard drive

Connectors
External connectors:
Serial
9-pin connector; 16550C-compatible
Parallel
25-hole connector (bidirectional)