On my mother board I have a "PCI Express x1 card connector" close to my video card. Its empty. Dopes anyone know what this is ? Dell 8400 about 1.5yrs old Windows XP Home Edition Service Pack 2 (build 2600) 3.40 gigahertz Intel Pentium 4 16 kilobyte primary memory cache 1024 kilobyte secondary memory cache 160.00 Gigabytes Usable Hard Drive Capacity 140.91 Gigabytes Hard Drive Free Space JLMS DVD-ROM XJ-HD166 [CD-ROM drive] TEAC DVD+RW DV-W58E [CD-ROM drive] 3.5" format removeable media [Floppy drive] WDC WD1600JD-75HBB0 [Hard drive] (160.00 GB) -- drive 0 Dell Inc. Dimension 8400 System Service Tag: HR44D51 (support for this PC) 1536 Megabytes Installed Memory Multimedia--SoundMAX Integrated Digital Audio Unimodem Half-Duplex Audio Device