Here are the supported SFP's on the SG300:
http://www.cisco.com/c/en/us/products/collateral/switches/small-business-smart-switches/data_sheet_c78-610061.html
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Supported SFP modules
|
SKU
|
Media
|
Speed
|
Maximum Distance
|
|
|
MFEFX1
|
Multimode fiber
|
100 Mbps
|
2 km
|
|
|
MFELX1
|
Single-mode fiber
|
100 Mbps
|
10 km
|
|
|
MFEBX1
|
Single-mode fiber
|
100 Mbps
|
20 km
|
|
|
MGBBX1
|
Single-mode fiber
|
1000 Mbps
|
40 km
|
|
|
MGBSX1
|
Multimode fiber
|
1000 Mbps
|
300 m
|
|
|
MGBLH1
|
Single-mode fiber
|
1000 Mbps
|
40 km
|
|
|
MGBLX1
|
Single-mode fiber
|
1000 Mbps
|
10 km
|
|
|
MGBT1
|
UTP cat 5
|
1000 Mbps
|
100 m
|
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