Chapter 4 Motherboard Connections; Headers And Connectors - Supermicro SuperServer 420GH-TNGR User Manual

Motherboard Connections
This section describes the connections on the motherboard and provides pinout definitions.
Note that depending on how the system is configured, not all connections are required. The
LEDs on the motherboard are also described here. A motherboard layout indicating component
locations may be found in
Please review the Safety Precautions in

4.1 Headers and Connectors

VROC RAID Key Header
A VROC RAID Key header is located at JRK1 on the motherboard. Install a VROC RAID
Key on JRK1 for NVMe RAID support as shown in the illustration below. Please refer to the
layout below for the location of JRK1.
Intel VROC Key
Pin Definitions
Pin# Definition
1 Ground
2 3.3V Standby
3 Ground
4 PCH RAID Key
Note: The graphics contained in this user's manual are for illustration only. The compo-
nents installed in your system may or may not look exactly the same as the graphics
shown in the manual.
Chapter 4
Chapter 1. More detail can be found in the Motherboard Manual.
Appendix A
70
Chapter 4: Motherboard Connections
before installing or removing components.
VROCK Key
VROCK Key Header (JRK1)