The PEPRX16 is a B-Side 3-slot PCI/PCI-EXPRESS/PCI right angle riser designed to be plugged into a PCI Express X16 slot and to be mounted into a 2U rackmount chassis with three horizontal cutouts that line up with a PCI Express X16 on the motherboard.

The bottom connector is connected to a PCI slot on the motherboard via a wide cable. The top connector has most of its signals connected to the bottom connector, except some dedicated signals that are connected to another PCI slot on the motherboard via a narrow cable.

User can order the riser with PE-X1, X4, X8 or X16 and PCI-32 or PCI 64 connectors. All connectors are mounted on the B side of the riser card. This riser is designed for chassis with horizontal cutouts that line up with a PCI-Express_X16 slot on the motherboard.

The top PCI connector is located at 2.68", the middle PE connector is located at 1.88", and the bottom PCI connector is located at 1.08" height.. The overall dimension of the main board assembly is 2.91"H x 7.10"W. All height dimension are referenced to the bottom of the board. The wide and narrow cables can be ordered in various lengths, depending on the location of the PCI slots on the motherboard. The two PCI slots on the motherboards that are used for the connection must be controlled by the same channel of a PCI bridge controller on the motherboard.

A power option (-W) is available to provide more 12V, 5V and 3.3V to the connectors on the riser. It accepts the power from a 4 pin PC power connector for the floppy drive.

Part Number Suffix Definition:
A sample part number format for the EPERXP is PEPRX16-XYZ-ABC-W/N.

-XYZ identifies the bus size of the three connectors, counting from top to bottom. The X and Z can be 8, 4 or 0, which means 64 bit, 32 bit or no PCI coonector. The Y can be x ,8, 4, 1 or 0, which means X16, X8, X4, X1 or no PE connector . For example, -8x8 means a 64 bit PCI at the top position , PE-X16 at the middle and a 64 bit PCI connector at the bottom positions. The -414 means 32 bit PCI connectors at the top and bottom, with a PE-X1 connector at the middle positions. A zero in any of the XYZ suffix, means no connector at that position.

-ABC identifies the VIO voltage selection for the PCI connectors and PE gold finger size. The A and C can be 3, 5 or 0, which means the PCI VIO is 3.3V, 5V or none. This should correspond to the connectors defined in the XZ suffix above. Since there is noVIO association with the PCI Express cards, the B suffix here is used to specify the size of the PE gold finger area. The B can be 0, 8, 4 or 1, which means no change (X16) to the gold finger, or cut down to PE X8, X4 or X1 size. For example, -303 means 3.3V, X16, 3.3V for each of the connectors specified in -XYZ position. The -515 means 5V, X1, 5V. This multiple riser allows the PCI connector VIO voltage to be different than the PCI slot VIO where the cables plug in.

-W/N means the cable lengths associated with the riser. The W reflects the wide cable in inches. The N reflects the narrow cable in inches. The wide cable carries all the signals from a PCI slot on the motherboard to the riser, and the narrow cable carries only the necessary signals from another PCI slot to the riser. For example -1/2 means 1" wide cable and 2" narrow cable. The two PCI slots that are being used, must have common bus signals coming from a single PCI bridge controller channel on the motherboard. Both slots must run at the same clock speed and have same VIO voltage.