Mounting KIT Instructions

The Baseline Dual Speed Hub is supplied with two mounting brackets and four screws. These are used for rack mounting the unit. When mounting the unit, you should take note of the guidelines given in “Positioning the Baseline Dual Speed Hub”on page 3.

The Baseline Dual Speed Hub is 1U high and will fit a standard 19-inch rack.

CAUTION: Disconnect all cables from the unit before continuing. Remove the self-adhesive pads from the underside of unit, if already fitted.

To rack mount the unit:

1Place the unit the right way up on a hard, flat surface with the front facing towards you.

2Locate a mounting bracket over the mounting holes on one side of the unit, as shown in the diagram.

3Insert the two screws supplied in the mounting kit and fully tighten with a suitable screwdriver.

4Repeat the two previous steps for the other side of the unit.

5Insert the unit into the 19-in. rack and secure with suitable screws (not provided).

6Reconnect all cables.

PROBLEM SOLVING

Refer to the information about LEDs given earlier in this guide to see if the problem can be identified and rectified. If the problem persists and the Baseline Dual Speed Hub still does not operate successfully, contact your supplier with the following information before returning the unit:

!Product number and serial number (printed on a label on the rear of the unit)

!A brief description of the fault

When returning any equipment to your supplier ensure that the equipment is packed suitably for transit.

Some older NIC (network interface card) cards were developed before the standardization of the auto-negotiation protocol. These may cause the Baseline Dual Speed Hub to sense the speed of the network incorrectly. We strongly recommend that you install the latest versions of the NIC drivers before connect- ing your network. 3Com NIC card drivers dated before 23/03/95 should be updated from the 3Com website.

TECHNICAL INFORMATION

Related Standards

The SuperStack 3 Baseline Dual Speed Hub has been designed to the fol- lowing standards:

Functional	ISO/IEC 8802-3, IEEE 802.3, IEEE 802.3u, IEEE 802.1D
Safety	UL 1950, EN 60950, CSA 22.2 #950, IEC 60950
EMC Emissions	EN 55022 Class A, VCCI Class A, AS/NZS 3548 Class A,
	FCC Part 15 Class A, ICES-003 Class A, CNS 13438,
	EN61000-3-3, EN61000-3-2.
Immunity	EN55024
Physical
Width	440 mm (17.3 in.)
Depth	173 mm (6.8 in.)
Height	44 mm (1.7 in.) or 1 U
Weight	3C16592B: 2.22 kg (4.90 lb)
	3C16593B: 2.10 kg (4.63 lb)
Mounting	Free standing, or 19 in. rack mounted using the mounting
	kit supplied

Electrical

Power Inlet	IEC 320
AC Line Frequency	50/60 Hz
Power Consumption	3C16592B: 25 VA
	3C16593B: 42 VA
Power Dissipation	3C16592B: 86 BTU/hr
	3C16593B: 142 BTU/hr
Input Voltage	100–240 V AC
Current Rating	3C16592B: 1.0 A (maximum)
	3C16593B: 1.0 A (maximum)
Environmental
Operating Temperature	0–50 °C (32–122 °F)
Humidity	0–95 % (non-condensing)