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ATX Riser cards are used with ATX form factor mother
boards. The ATX Riser card allows compact PC chassis designs with out
expansion slots to provide additional expansion slots, additional slots
are added in the vertical direction by using the Riser card which
contains the slot connectors. A compact PC chassis may be used with an
ATX Mother Board, or a larger chassis can be designed using the same Mother
Board and a Riser card, providing expansion slots. This standard differs
from the others in that it provides expansion slots and not just one slot
used for an expansion card, such as a modem card. The ATX Riser standard requires a single PCI slot connector on the Mother Board, with the addition of a 2 x 11 pin connector in front of the PCI connector. The 2 x 11 connector is also a PCI style connector. There is an 8.35 mm gap between the two connectors. The ATX Riser board will provide either 2 or 3 expansion slots. The basic size of a 2 slot card is 120.85mm x 50.8mm. The basic size of a 3 slot card is 120.87mm x 71.12mm. Other types of Riser Cards. |
| Pin # | B Side | A Side |
| 1 | GND | PCI_GNT1# |
| 2 | PCI_CLK1 | GND |
| 3 | GND | PCI_GNT#2 |
| 4 | PCI_REQ#1 | GND |
| 5 | GND | PCI_CLK3 |
| 6 | PCI_CLK2 | Riser_ID1 |
| 7 | GND | RESVD |
| 8 | PCI_REQ#2 | Riser_ID2 |
| 9 | GND | NOGO |
| 10 | PC/PCI_DREQ# | +12v |
| 11 | PC/PCI_DGNT# | SER_IRQ |
Design Key words for this page:Riser Card, PC, Personal Computer, ATX, CNR, ACR, AMR, ISA, PCI, Industry Standard Architecture Bus, Pinout, Expansion Bus Pinouts, Pin-out, Pin Out, Connector, Signal Names, Pin descriptions, Card size, PWB Board Mechanical Dimensions, Mechanics Description, Electrical Interface, Parallel Bus, Physical Interface, Signal Assignments.
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Copyright © 1998 - 2008 All rights reserved Leroy Davis