Cisco
GLC-SX-MM
$79
GLC-SX-MM SFP gigabit ethernet module.
Cisco
WS-G5483
$100
Cisco Genuine 1000BASE-T Gigabit Interface Converter (GBIC)
Cisco
WS-G5484-GBIC-1000Base-SX
$53
GBIC SX fiber interface module - Cisco & other brands
Cisco
WS-G5487
CALL
1000Base-ZX extended reach GBIC (singlemode)
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