24 Technical Manual D2619 (RX/TX300 S5)
PCI bus Features
3.3 PCI bus
The system board offers seven PCI Express expansion slots. The slots 1-5 are
wired as x4 interfaces. If the slots 2 and 4 remain free, the slots 3 and 5 can be
used as x8 interfaces.
I Slot 1 is the preferred slot for the HDD controller (bootable).
Figure 6: PCIe slots
The following table shows an overview of the PCIe slots:
PCI slot Description
1 PCIe x4 slot for RAID controller
2 PCIe x4 slot
3 PCIe x4 slot (slot 2 free: x8)
4 PCIe x4 slot
5 PCIe x4 slot (slot 4 free: x8)
6 PCIe x8 slot
7 PCIe x8 slot