IBM AT-FS202SC/FS2, AT-FS202SC/FS4 manual lists the maximum operating distances for the switches

AT-FS20x Series Installation Guide

Table 1 lists the maximum operating distances for the switches.

Table 1 Maximum Operating Distances

	100Base-FX		10/100Base-TX
Model
		Maximum		Maximum
	Connector	Operating	Connector	Operating
		Distance1		Distance2
AT-FS201	ST	2 km (1.2 mi)	RJ-45	100 m (328 ft)
AT-FS202	SC	2 km (1.2 mi)	RJ-45	100 m (328 ft)
AT-	SC	15 km (9.3 mi)	RJ-45	100 m (328 ft)
FS202SC/
FS1
AT-	SC	40 km (24.8	RJ-45	100 m (328 ft)
FS202SC/		mi)
FS2
AT-	SC	75 km (46.5	RJ-45	100 m (328 ft)
FS202SC/		mi)
FS3
AT-	SC	100 km (62 mi)	RJ-45	100 m (328 ft)
FS202SC/
FS4

1.Maximum distance for 100 Mbps optical datalinks is dependent on the following factors: type of optical fiber, duplex mode of both end-nodes, and maximum optical loss budget for each of the optical fiber at the operating optical wavelength.

2.Maximum distance can only be obtained when the UTP/STP cabling is installed and verified to TIA/EIA 568A Commercial Building Telecommunications Cabling Standard.

3