Dell Force10 MXL Blade Getting Started Manual page 8

Then save the configuration and reload the switch.
FTOS# write memory
FTOS# reload
Figure 1-2. MXL 10/40GbE Switch: Plug-in Modules
4-Port 10GbE SFP+ Module
4-Port 10GBASE-T Module (100Mb/1GbE/10GbE)
NOTE:
You can only hot-swap plug-in modules of the same type without requiring a
reboot. For example, you can replace a 2-Port 40GbE QSFP+ module only with
another 2-Port 40GbE QSFP+ module.
On the MXL 10/40GbE Switch, you can configure uplink ports of the same
speed on different modules in the same link aggregation group (LAG). You
can also use individual ports for uplink connections.
NOTE:
A maximum of 16 ports are supported in a LAG.
For switch stacking, you must use a 40GbE port on the base module or on a
2-Port 40GbE QSFP+ plug-in module. Stacking is not supported on 10GbE
ports.
All FlexIO plug-in modules, transceivers, and attach cables are sold separately.
8
Hardware Overview
2-Port 40GbE QSFP+ Module