Hi David,
My name is Iliya Gatsev from Cisco Technical Support Team.
Compatible with the SF112-24 switch are following modules:
MGBBX1, MGBSX1, MGBLH1, MGBLX1, MGBT1, MFEFX1, MFELX1 and MFEBX1
You can find more information here:
https://www.cisco.com/c/en/us/products/collateral/switches/small-business-100-series-unmanaged-switches/datasheet_C78-582017.html
Please rate this post or marked as answered to help other Cisco customers.
Iliya Gatsev
Cisco TAC Network Engineer
Together we are the human network .:|:.:|:. CISCO