Cisco Catalyst 2900 Series - Cisco Catalyst 6500 Series (IOS) Supported Events

Chapter 2 Installation
Power-On Self-Test
2-12
Catalyst 2900 Series XL Modules Hardware Installation Guide
78-5912-03
Note If you power up a Catalyst 2912MF XL, Catalyst 2916M XL, or
Catalyst 2924M XL switch with modules installed, the module ports
are the last to run POST.