Sony PCV-L400 - Manual (Page 51)

System Board 43
PCI Slot Connectors
The system board contains one PCI Riser slot connector for a PCI riser
card. The PCI riser card in turn provides two PCI slot connectors for PCI
add-in cards. One PCI slot connector is available for an add-in PCI card.
The other PCI slot connector is occupied by the fax/modem card.
The PCI slots in the riser card support 32-bit 5V and Universal (3.3/5V)
PCI add-in cards.
OM04599B.VSD
PCI slot for
riser card
KY0091.VSD
Two PCI slot connectors
PCI riser card
(plugs into PCI connector
on system board)