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Specifications 31
Bus speed x1-slot bidirectional speed — 500 MB/s (PCI Express)
x16-slot bidirectional speed — 16 GB (PCI Express)
1.5 Gbps and 3.0 Gbps (SATA)
480-Mbps high speed, 12-Mbps full speed, 1.2-Mbps
low speed (USB)
Expansion card slots
connectors
Mini Tower: four full-height slots
Desktop: four half-height slots without riser, two
full-height slots, two half-height slots with riser
Small Form Factor: two half-height slots
PCI Mini Tower: two connectors
Desktop: two low-profile connectors, with support for
two full-height 6.9-in PCI cards (or one 6.9-in PCI
and one 6.9-in PCIe x16 card) if a PCI riser board is
used
Small Form Factor: one connector
connector size
124 pins
connector data width
(maximum)
32 bits
PCI Express
NOTE: When using the built-in DisplayPort connector,
the x16 PCI Express slot is disabled.
connector
Mini Tower and Desktop: one x16 connector and
one x1 connector
Small Form Factor: one x16 connector
connector size
x16: 164 pins
x1 36 pins
connector data width
(maximum)
16 PCI Express lanes (x16)
Expansion Bus (continued)