Specifications

PCIe/104 and PCI/104-Express Specification Revision 3.0 February 17, 2015 Page 8
2. EXPANSION CONNECTOR A
2.1. Functions
Not all processors and chipsets support all features on the PCIe/104 connectors, and in some cases the design of the Host
may consume some or all of these features, rendering them unavailable. It is up to the Host designer to determine the
type and number of features included on the expansion connector. For cases where the host provides less than the
maximum number of features supported by the connector, see Section 2.4.4.
2.1.1 PCIe/104 Type 1 and Type 2 Common Features
PCIe/104 Type 1, Type 2 and the OneBank implementation have this common feature set
• Four x1 PCI Express Links
• Two USB 2.0
• ATX power and control signals: +5V Standby, Power supply on, Power OK
• Power: +3.3V, +5V, +12V (A OneBank implementation does not include +12V)
• SMBus
2.1.2 PCIe/104 Type 1 Only Additional Features
One x16 PCI Express Link, or optionally two x8 Links, or two x4 PCI Express Links
2.1.3 PCIe/104 Type 2 Only Additional Features
Two PCI Express x4 Links
Two USB 3.0
Two SATA
LPC Bus
RTC Battery