40-port Ethernet
10/100 Switch, 4K-Series
High port density, with
40 ports in a 1U rackmount package, LEDs in
front, connectors in rear
NEBS compliant 48VDC, dual-source optional
40 switched ports, organized in two banks of
20 ports each with a
200Mb/sec internal
trunk interconnect
• Has metal case and an
auto-ranging internal
power supply.
• Available options include
-48VDC, 24VDC, and
125VDC power, dualsource, NEBS and ETSI
compliant, “Reverse” rack
mount, ETSI and 23” Telco
brackets, Class A EMI, and
extended temperature
range operation
“The Rack-Space-Saver”
Magnum™ Model 4K220 40-port Switches provide high port density in the wiring center, and low cost per switched port. They boost
the performance of Ethernet LANs, with the flexibility of 10Mb or
100Mb switching speed, full- or half-duplex per port for low cost
per switched user port.
Where vertical rack space is at a premium, the 1U 4K220 is
very economical. For an equal number of ports, other solutions take
double the rack space or more. With the 4K220, all rack-mount situations are covered by available brackets, including 19”, ETSI, and
23” Telco.
The 40-port density in a 1U (1¾ inches high) rack-mount “reverse” package is obtained by dedicating the front of the unit to
the LED indicators, and the rear of the unit to wiring and power
connectors. When the unit is in operation, the status LEDs may be
monitored without interference from the wiring and cables on the
other side.
Designed for use in Carrier Class network traffic center applications, the 40-port Magnum 4K220 Switches are easy to install
and use. Addresses of attached nodes are automatically learned and
maintained, adapting the switching services to network changes and
expansions to provide plug-and-play operation. LEDs provide status information on each port.
The Magnum 4K220 Switches are non-blocking on 20-port
banks, and include large 2MB packet buffers for advanced performance, even with unbalanced loads. The dynamic 4K-node address
table allows the 40-port Magnum Switches to support large networks. All of the Magnum 4K-Series, with store-and-forward switching, filter all faulty packets to minimize traffic congestion.
Magnum Model 4K220 Switches have a rugged metal case
and an auto-ranging power supply for operation with standard AC
power worldwide. Models with optional DC input power are available. The 4K-Series and all other Magnum products are made in the
USA and backed by a three-year warranty.
40-port Ethernet 10/100 Switch
Model 4K220
RJ-45 Ports: 100 or 10Mbps speed, full- or half-duplex mode, per
port, individually determined by auto-negotiation.
Processing type: Store and Forward with IEEE 802.3x full-duplex
flow control, non-blocking per bank, two 100Mb/s trunks between
20-port banks
System aggregate forwarding and filter rate: 3M pps within each
20 port bank (all ports 100Mb speed), 298K pps between port
banks, 6M pps for all (40) ports
Address table: 4K nodes, self-learning, with address aging
Packet buffers: 2 MB dynamic
Latency: 5µs + packet time max (TX - TX)
IEEE 802.3u : 100BASE-TX, IEEE 802.3: 10BASE-T
Auto-negotiation on TP, IEEE 802.3u
Ambient: 32° to 120°F (0° to 50°C)
Storage: -40°to 160°F (-40°to 70°C)
Ambient relative humidity: 5% to 95% (non-condensing)
Conformal coating (humidity protection) option: Request quote
Thumb-operated slide switch, converts right-most lower Port 39
from a regular (= position) port to a crossover (X position) Up-Link
for on/off connection to a cascaded hub or switch.
PWR: Steady on when power applied
-48VDC: Input -36 to -70VDC
24VDC: Input 20 to 40VDC
125VDC: Input 120 to 160VDC
Std. Terminal Block: "-, GND, +",
Power Consumption: Same as AC
The Magnum 4K220 may be ordered with optional Dual DC power
input, for continuity of operation when either one of the DC input sources is interrupted. Available for -48VDC, 24VDC, and
125VDC input types.
Enclosure: Rugged high-strength sheet metal. Suitable for standalone or 1U rack-mounting.
Rack-mounting brackets: 19” included; ETSI and 23” Telco optional.
Cooling Method: Fan cooled, internal @ 7 cfm
Dimensions: 1.75 in H x 17.0 in W x 9.0 in D
(4.45 cm H x 43.2 cm W x 22.9 cm D)
Weight: 5.0 lb. (2.3 kg)
FDX / Col: Steady on for FDX, blinking for HDX collisions.
LINK /ACT: On with Link enabled, blinking for RX port activity
100 / 10: ON = Link at 100Mbps, OFF = 10 Mbps or No Link
UL Listed (UL60950), cUL, CE
Emissions meet FCC Part 15, Class A
Three years
Made in USA
RJ-45 shielded female ports, qty = 40
100Mb: Category 5 UTP/STP, 10Mb: Cat. 3,4, 5 UTP
AC Power Connector: IEC-type, male recessed.
Power Input Voltage: 100 to 240 VAC (auto ranging)
Power Input Frequency: 47 to 63 Hz
Power Consumption: 28 Watts typical, 35 Watts max.
©2005 GarrettCom, Inc. Printed in United States of America Doc No.4K220-R5 3/05
GarrettCom, Inc. reserves the right to change specifications, performance characteristics
and/or model offerings without notice. GarrettCom, Magnum, Personal Switch, LinkLoss-Learn, S-Ring, Convenient Switch and Converter Switch are trademarks and Personal Hub is a registered trademark of GarrettCom, Inc. NEBS is a registered trademark
of Telcordia Technologies. UL is a registered trademark of Underwriters Labs.
Ordering Information
Magnum 4K220CR
Ethernet Switch with 40 RJ-45 ports, each auto-sensing for 100Mb / 10Mb FDX / HDX operation. Each
port is switched and provides a full-speed traffic domain with non-blocking performance per bank. The
4K220 is internally organized as two 20-port switch banks with a 200Mb/sec trunk interconnecting them.
Includes internal auto-ranging power supply, cooling fan, and metal brackets for 19” rack-mounting.
“Reverse” models only; LEDs are in the front, AC power and user connectors are in the rear.
Same as above, except with -48VDC power supply. NEBS compliant. Seperately order Dual-source and
rack-mount options as desired.
GarrettCom, Inc.
213 Hammond Ave.
Fremont, CA 94539
PH: (510) 438-9071
FAX: (510) 438-9072
Email: mktg@garrettcom.com
Web: www.GarrettCom.com
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