What is this item that came with my Cisco switch?
Looks like parts to hold the power cable into the switch.
It's part of the power cable assembly. It serves two functions:
- Mechanically hold the power cable in so it can not be accidentally pulled
- Stress relief on the power plug itself, so the weight of the cable doesn't either loosen the connection or cause a short
I've seen this as standard equipment in all Juniper EX series switches, but the first time I've seen it on a Cisco. Also easier to install than a lot of other supports, since the support body screws on around the power cable.