Dell Vostro 420 (Late 2008) - Manual (Page 33)

Specifications
33
PCI cards:
connectors Vostro 420:
one PCIe x16
two PCIe x1
four PCI
Vostro 220/220s
one PCIe x16
one PCIe x1
two PCI
connector size 124 pins
connector data width
(maximum) 32 bits
x1 PCI Express cards:
connector one
connector size 36 pins
connector data width
(maximum) one PCI Express lane
x16 PCI Express cards:
connector one
connector size 164 pins
connector data width
(maximum) 16 PCI Express lanes
Expansion Bus (continued)