3Com 3CR17661-91, 3CR17662-91, 3CR17660-91 Rear View Detail, Slots, 1000BASE-X Port SFP Port LEDs

Switch 4200G — Rear View Detail 19

Table 5 LED Behavior (continued)

LED	Color	Indicates
Duplex Green		Full duplex, blinking off for every packet received or
		transmitted.
	Yellow	Half duplex, blinking off for every packet received or
		transmitted.
	Yellow flashing	The port has failed POST.
	Off	No link is present.
1000BASE-X Port SFP Port LEDs
Speed	Green	A high speed (1000 Mbps) link is present.
	Yellow Flashing	Port failed POST.
	Off	No link is present.
Duplex Green		Full duplex packets are being transmitted/received on the
		port.
	Yellow	Half duplex packets are being transmitted/received on the
		port.
	Yellow flashing	Port failed POST.
	Off	No link is present.

Switch 4200G — Figure 4 Switch 4200G—rear view

Rear View Detail

MOD 1 MOD 2

AC Power Input	10Gbps Interface	10Gbps Interface
	Slot 1	Slot 2

Power Socket The Switch automatically adjusts its power setting to any supply voltage in the range 100–240 VAC.

10 Gbps Interface The MOD 1 and MOD 2 interface slots accept the 10 Gbps SFP modules.

Slots