Voltage Regulator Module (VRM) and Enterprise Voltage Regulator-Down (EVRD) 10.0 Design Guidelines

VRM and EVRD 10.0 Design Guidelines

7 VRM – Mechanical Guidelines

7.1 VRM Connector EXPECTED

The VRM interface with the baseboard is a 31-pin pair edge connector. The connector uses

latches to hold the VRM in place. Table 9 shows the connector vendors and part numbers.

Table 9. VRM 10.0 Connector Vendor and Part Numbers

Vendor Part Number Notes

Tyco/Amp 1489930-2 1

Foxconn 2EV04607-NW 1

NOTES:

1. These vendors are listed by Intel as a convenience to Intel's general customer base, but Intel does not

make any representations or warranties whatsoever regarding quality, reliability, functionality, or

compatibility of these devices. This list and/or these devices may be subject to change without notice.

7.2 VRM Connector Keying

The connector contains a single notch between pins 10 and 11 (52 and 53 on opposite side) as

shown in Figure 10. This configuration allows both VRM10.0 and VRM 10.1 modules to be

plugged into the connector. The connector footprint key to the baseboard is at pin 57.

7.3 Pin Descriptions and Assignments

Table 10 shows the VRM10.0 connector pin definitions. The pins that are labeled Reserved

should not be used if there are plans to use VRM10.1 modules with this connector. Those pins are

used on the VRM10.1 module as an additional input voltage pair. Systems that also plan to use

VRM10.1 modules should connect pin 4 to VIN+ and pin 59 to VIN–. See the Voltage Regulator

Module (VRM) and Enterprise Voltage Regulator-Down (EVRD) 10.1 Design Guidelines for

more information. Otherwise those pins can be classified as Unspecified. The pin assignments are

shown in Table 11.