Sony PCV-RX460 - Manual (Page 29)

Identifying Components 15
Expansion Slots
There are three PCI slots, two of which are available for expansion (PCI
No. 2 and No. 3). The other PCI slot is occupied by the fax/modem card
(PCI No. 1). There is one AGP slot that is available for expansion.
Slot No. 4 (AGP)
Slot No. 3 (PCI)
Slot No. 2 (PCI)
Slot No. 1 (PCI)