The IIsi uses a single PDS for expansion and requires an adapter to install a [[NuBus]] card. The PDS to [[NuBus]] adapter will typically also include an FPU. Certain PDS expansion cards for the [[Macintosh SE/30]] may work in the IIsi, as long as they're compatible with the difference in system bus speeds. See below for wiki information on IIsi expansion cards:
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The IIsi uses a single PDS for expansion and requires an adapter to install a [[NuBus]] or standard size PDS card. The PDS to [[NuBus]] adapter will typically also include an FPU. Certain PDS expansion cards for the [[Macintosh SE/30]] may work in the IIsi, as long as they're compatible with the difference in system bus speeds. See below for wiki information on IIsi expansion cards:
* [[Applied Engineering QuickSilver]] - Cache card with FPU and doubles as a right-angle PDS adapter
* [[Applied Engineering QuickSilver]] - Cache card with FPU and doubles as a right-angle PDS adapter
* [[EMacSE30C]] - Ethernet card for the SE/30 but also is compatible with the IIsi
* [[EMacSE30C]] - Ethernet card for the SE/30 but also is compatible with the IIsi
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See [[Apple Macintosh IIsi 030 Direct Slot Adapter Card]] for the PDS adapter.