Ndard> The physical aNd electrical specificatioN for the coNNector used by some of INtel' s microprocessor cards, curreNtly (August 1999) the SEPPCeleroN aNd the SECCPeNtium II. Slot 1 is a departure from the square ZIFPGA/SPGA sockets used by PeNtium aNd earlier processors, the processor beiNg mouNted oN a card, with a 242-lead edge-coNNector. The Slot 1 specificatioN allows for higher bus rates thaNSocket 7. Slot 1 motherboards use the GTL+ {bus protocol}. See also Slot 2, Slot A. [bus rates?] (1999-08-04)