product PEX 8112 supports forward and reverse bridges as defined by the PCI to PCI Express / PCI-X Bridge Specification 1.0.In forward mode, the bridge allows legacy PCI chips and adapters to be used with the new PCI Express processor system. Reverse bridge operation allows traditional PCI processors and chipsets to configure and control advanced PCI Express switches and endpoints.In contrast, the PEX 8112 not only allows downstream PCI Express systems to be fully configured from the PCI bus, but also handles limited PCI Express root functions for reverse interrupt and power management events.specification:Chipset: PXE8112Compliant with PCI Specification Version 2.3PCI 32-bit card for PCI Express x1, x4, x8 or x16PCI Express 1 port (1 virtual ), 2.5GbpsCompliant with PCI Express Specification Version 1.0Combination low profile PCI 32-bit host cardSupport PCI slot 3.3V / 1A, 3.3Vaux / 100mA, 5V / 5A and 12V / 500mPlug and playapplication:Windows Server 2000 / NT / XP / Vista / Win 7, LinuxAvailable PCI slotscolour: black-greenmaterial: ABS + metalsize: 131 * 87 * 30mmPackage Contents: 1 x conversion card1 x short iron pieceNote: This product does not require a driver.Only the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.