Does the pci express 2.0 work with the dell optiplex 755?

bws678

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Oct 5, 2013
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I have a Gateway 505gr that I just realized has only a PCI express 1x16 slot. The graphics card that I have is a 1gb zotac 9800gt PCI express 2.0x16 that is compatible with 1.1. So I understand that it is too new to work with the computer I currently have. But I am getting a used dell optiplex 755 large case from a friend. It currently has an ATI radeon 2400 HD with 128mb of ram. I am just wondering if I can put my zotac graphics card into the dell optiplex 755 and have it work. Is the dell optiplex PCI express slot 1.1/2.0? Help would be greatly appreciated. Thanks!