What signal levels (voltage) does PCI support? - What signal levels (voltage) does PCI support? Description PCI ™ Local Bus Specification v2.2 supports both 3.3V and 5V signaling. PCI Local Bus Specification v2.3 supports 3.3V and 5V signaling but without 5V-only cards. PCI Local Bus Specification v3.0 will support 3.3V signaling only. Custom Fields values: ['novalue'] Troubleshooting novalue False ['PCI'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']