A third standard, GIO32-bis, used the signals and timing of GIO64, but with the 32-bit connectors from GIO32. Properly designed GIO32-bis cards could be used in GIO64, GIO32 or GIO32-bis slots, differentiating the later two by looking at a pin tied to ground in the original GIO32, and tied "high" in GIO32-bis. For low-throughput cards, GIO32-bis allowed a single device to be used on any machine supporting GIO, no matter what generation.
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