3Com SuperStack II Baseline Dual Speed Hub 24-Port Podręcznik użytkownika - Strona 4

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M
OUNTING
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:
1
Place the unit the right way up on a hard, flat surface with the
front facing towards you.
2
Locate a mounting bracket over the mounting holes on one
side of the unit, as shown in the diagram.
3
Insert the two screws supplied in the mounting kit and fully
tighten with a suitable screwdriver.
4
Repeat the two previous steps for the other side of the unit.
5
Insert the unit into the 19-in. rack and secure with suitable
screws (not provided).
6
Reconnect all cables.
P
ROBLEM
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.
T
ECHNICAL
®
The SuperStack
II Baseline Dual Speed Hub has been designed and
certified to the following 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
EN 55022 Class B*, VCCI Class B*, AS/NZS3548
Class B*, FCC Part 15 Class A, ICES-003 Class A
* Category 5 screened cables must be used to ensure complete
compliance with the Class B requirements of this standard.
The use of unscreened cables (Category 3 or 5 for 10BASE-T
ports or Category 5 for 100BASE-TX ports) complies with
Class A requirements.
Immunity
EN 50082-1 (IEC801 Parts 2–5)
Environmental
Operating Temperature
Humidity
K
IT
S
OLVING
I
NFORMATION
0–50°C (32–122°F)
0–95% (non-condensing)
I
NSTRUCTIONS
Physical
Width
Depth
Height
Weight
Mounting
Electrical
Power Inlet
AC Line Frequency
Power Consumption
Power Dissipation
Input Voltage
Current Rating
4
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 connecting your
network. 3Com NIC card drivers dated before 23/03/95
should be updated from the 3Com website.
440 mm (17.3 in.)
173 mm (6.8 in.)
44 mm (1.7 in.) or 1U
3C16592A: 2.22 kg (4.90 lb)
3C16593A: 2.10 kg (4.63 lb)
Free standing, or 19-in. rack mounted using the
mounting kit supplied
IEC 320
50/60 Hz
3C16592A: 25 VA
3C16593A: 42 VA
3C16592A: 86 BTU/hr
3C16593A: 142 BTU/hr
100–240 VAC
3C16592A: 1.0 A (maximum)
3C16593A: 1.0 A (maximum)