The PCI-Express to 1 x PCI adapter is designed to support expansion of modern motherboards with limited numbers of PCI connectors. IT converts the standard x1 / x4 / x8 / x16 PCI-Express slot to one independent 32-bit PCI slot; Compliant with PCI Express base specification revision 1.1; Compliant with PCI Express to PCI / PCI-X Bridge specification revision 1.0; Compliant with PCI Local Bus specification revision 3.0; PCI Express x1 link with 2.5Gbps data rate; 3.3V PCI signaling with 5V I/O tolerance; 12V power supply on board; Supports Windows 2000 / NT / 2003 / Vista / Linux