Dell Dimension E521 User Manual

112 Appendix
Audio
Type Sigmatel 9227 CODEC (7.1 Channel audio)
Expansion Bus
Bus type PCI 2.3
PCI Express 1.0A
SATA 1.0 and 2.0
USB 2.0
Bus speed PCI: 133 MB/s
PCI Express:
x1 slot bidirectional speed - 500 MB/s
x16 slot bidirectional speed - 8GB/s
SATA: 1.5 Gbps and 3.0 Gbps
USB: 480 Mbps high speed, 12 Mbps full speed, 1.2 Mbps low
speed
PCI
connectors two
connector size 124 pins
connector data width (maximum) 32 bits
PCI Express
connector one x1
connector size 36 pins
connector data width (maximum) 1 PCI Express lane
PCI Express
connector one x16
connector size 164 pins
connector data width (maximum) 16 PCI Express lanes
Drives
Externally accessible:
Bays one 3.5-inch drive bay (FlexBay)
two 5.25-inch drive bays
Available devices Serial ATA drives (4), floppy drive, USB memory devices, CD/DVD
drive, and Media Card Reader
Internally accessible: two bays for 1-inch high serial ATA hard drives

Dell Dimension E521 Specifications

General

Brand	Dell
Model	Dimension E521
Category	Desktop
Language	English