Bild. Name. Beschreibung. Status. Datenblatt. HPCIE-Q, Half-size PICMG CPU card. IOWA-LX, Half-size pure ISA CPU card with on-board AMD. You can expand your PC internally by adding additional circuitry boards. Those boards, or expansion cards, plug directly into expansion slots on the. ISA, or Industry Standard Architecture, is an 8bit or 16bit parallel bus system that allowed up to 6 devices to be connected to a PC. Virtually all IBM-compatible.