https://community.hpe.com/t5/general/sc11xe-scsi-host-bus-adapter/m-p/4730175#M4415 If your PCI-e slot has physical connector 4x or larger, SC11Xe will works regardles of number of electrical lanes. Thu, 23 Dec 2010 14:36:51 GMT Zygmunt Krawczyk 2010-12-23T14:36:51Z https://community.hpe.com/t5/general/sc11xe-scsi-host-bus-adapter/m-p/4730174#M4414 Hello everyone<BR />This card is compatible pci-e 4x.<BR /><BR />This card is backwards compatible with standard 2x pci-e?<BR />I can use this card with a slot on my mainboard PCI-e 2x?<BR />Thanks<BR /> Thu, 23 Dec 2010 10:41:58 GMT https://community.hpe.com/t5/general/sc11xe-scsi-host-bus-adapter/m-p/4730174#M4414 PinoGiuseppe 2010-12-23T10:41:58Z https://community.hpe.com/t5/general/sc11xe-scsi-host-bus-adapter/m-p/4730175#M4415 If your PCI-e slot has physical connector 4x or larger, SC11Xe will works regardles of number of electrical lanes. Thu, 23 Dec 2010 14:36:51 GMT https://community.hpe.com/t5/general/sc11xe-scsi-host-bus-adapter/m-p/4730175#M4415 Zygmunt Krawczyk 2010-12-23T14:36:51Z