Administrator Guide

Hardware Overview 135
A reboot is not necessary when a hot-pluggable module is replaced with a
module of different type. Plug-in modules with any port configured as a
stacking port are not hot-swappable. Remove the stack-port configuration
from a slot before plugging in a module.
A no slot or clear config command must be executed prior to inserting the
new module. Note that changing the role of a port from stacking to Ethernet
or vice-versa also requires a switch reboot.
If a no slot command is not issued prior to inserting a module, a message
such as the following will appear:
Card Mismatch: Unit:1 Slot:1 Inserted-Card: Dell 2 Port QSFP
Expansion Card Config-Card: Dell 4 Port 10GBase-T Expansion Card
The following sections provides details on each module.
Quad-Port SFP (QSFP) Uplink Module
The QSFP module supports features four ports that support 10G SFP+
transceivers. The QSFP module supports the following features:
• Four 10G ports with quad-breakout/QBO cable or one 40G port
• Front-panel port status LEDs
The QSFP interfaces can be used for stacking. Stacking is supported at
distances of up to 100M.
Quad-Port SFP+ Uplink Module
The N4000-SFP+ module features four SFP+ ports, each providing the
following features:
• SFP+ optical interfaces
• SFP+ copper twinax interface
• Front-panel port status LEDs
The SFP+ connections can be used for stacking. Stacking is supported at
distances of up to 100M.
10GBase-T Copper Uplink Module
The 10GBase-T copper module features four copper ports that can support
10GbE/1GbE/100MbE switching and provides following features: