Black Box Modular Switches, LE14XXA manual Factory Settings 10/100 Mbps

ack Box Modular SwitchesInstallation and User Guide (8/99)

ew and easy to read. Rack-mount installation requires special rack-mounted brackets and rews (included with each LE1408A and LE1416A unit). The brackets attach to the front sides the Switch, which is then fastened into a standard 19” rack.

4RJ-45 ports, internal jumper settings for 10/100Mb (auto-negotiation) or for xed Half- or Full-Duplex 100Mb, per port

The factory (or default) setting is for auto-negotiation on all RJ-45 ports, which is generally pular. It works well under most circumstances, but cannot always be

Jumper Settings for Auto-Negotiation, or for 100MB Half or Full Duplex

Jumper	Port	Function	Factory Settings	Speed
JP2-3,6-7, 10-11	Pin 2-3,6-7,10-11	Auto-Negotiation	YES	10/100 Mb,
JP1-2, 6-7, 9-10	Pin 1-2, 6-7, 9-10	FDX @100 config	NO	100 Mb
JP1-2, 7-8, 11-12	Pin 1-2, 7-8, 11-12	HDX@100 config	NO	100 Mb

Factory Settings 10/100 Mbps				100Mbps Full
							Duplex
Auto Negotiation					J1
	J1
							100 Mb
10/100			AUTO	1	2	3	4
1	2	3	4

100Mbps Half Duplex

J1

100 Mb

1 2 3 4

J1

9 10 11 12

5 6 7 8

1 2 3 4

Jumper Settings for HDX/FDX and Auto Negotiation

J1	J2	J3	J4	Bottom QPM Retaining
Printed Circuit card				Two(50) Pin
				QPM Connectors
TOP				(inserts into main board)
Uplink	LED
Switch

FRONT

gure 3.4. RJ-45 ports, internal jumper settings. Note: Be certain that the main power is sconnected before opening the unit or changing any internal jumper settings.

pended upon to work as expected. If auto-negotiation will not function properly in your tup, internal jumpers allow the speed and mode of the LE14XXA-Series RJ-45 (copper) 4- rts to be fixed, even if the attached device may or may not support auto-negotiation. This is sirable when there are unknown devices presently or potentially connected, which will not erate correctly with auto-negotiation. Examples include some NICs and most Media onverters.

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