3Com 8 manual Ethernet Hub 4 and 4C-Rear, 10BASE-2 port Hub 4C only

Ethernet Hub 4 and 4C—Rear

Power Adapter socket	AUI port (Hub 4C only)	Four 10BASE-T RJ-45 ports
Only use the power adapter that is supplied with	Allows 10Mbps transceivers of different media types	Use 10BASE-T cable with RJ-45
this OfficeConnect hub. Do not use any other	to be connected to the hub. Connecting a	connectors. You can connect the
adapter.	transceiver automatically disables the 10BASE-2	OfficeConnect hub to any workstation
	port.	or piece of equipment that has a
		10BASE-T port. Refer to “Connecting
		Hubs Using 10BASE-T” on page 14.

		Uplink
		Normal	1x
		4
POWER	COAX	AUI

10BASE-2 port (Hub 4C only) Uplink/Normal switch

Can be used to connect your hub to other OfficeConnect hubs and equipment with 10BASE-2 cabling.

If used, it is effectively a fifth port. Refer to “Connecting Hubs Using 10BASE-2” on page 13.

Affects the operation of port 4. For correct usage, refer to “Connecting Hubs Using 10BASE-T” on page 14.

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