Field Replaceable Unit upgrades and replacements

Last Updated : Feb 25, 2026 |

You can add or remove VoIP modules, the fan tray, or a power supply unit. You can add or replace a VoIP module, as well as add or remove components of the upgrade memory kit. Refer to Equipment list for ordering information.

Note:

There are four hardware versions of G450, referred to as G450 v1 (1.x) to G450 v4 (4.x).

  • On G450 1.x, the ASB button is to the right of the RST button.

  • On G450 2.x and greater, the RST button is above the ASB button.

In cases where the instructions differ according to the G450 version, instructions are given for both versions.