ATX Riser Card
From HwB
A standard 2x60 pin PCI connector in line with a 2x11 pin connector.
Pinout
| Pin | Name | Direction | Description | 
|---|---|---|---|
| A1 | PCI_GNT1# |   | 
Riser Slot 3 | 
| A2 | GND |   | 
Ground | 
| A3 | PCI_GNT2# |   | 
Riset Slot 2 | 
| A2 | GND |   | 
Ground | 
| A5 | PCI_CLK3 |   | 
Active PCI device | 
| A6 | RISER_ID1 |   | 
Riser ID/Mfg Test | 
| A7 | RESVD | ? | Reserved | 
| A8 | RISER_ID2 |   | 
Riser ID/Mfg Test | 
| A9 | NOGO |   | 
PCI2ISA | 
| A10 | +12V |   | 
Additional +12V | 
| A11 | SER_IRQ |   | 
PCI2ISA | 
| B1 | GND |   | 
Ground | 
| B2 | PCI_CLK1 |   | 
Riser Slot 3 | 
| B3 | GND |   | 
Ground | 
| B4 | PCI_REQ1# |   | 
Riser Slot 3 | 
| B5 | GND |   | 
Ground | 
| B6 | PCI_CLK2 |   | 
Riser Slot 2 | 
| B7 | GND |   | 
Ground | 
| B8 | PCI_REQ2# |   | 
Riser Slot 2 | 
| B9 | GND |   | 
Ground | 
| B10 | PC/PCI_DREQ# |   | 
PCI2ISA | 
| B11 | PC/PCI_DGNT# |   | 
PCI2ISA | 
Note: Direction is motherboard relative riser card.