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Table of Contents
Twisted Pair Data Center/SAN Information MRJ21 Cable Assemblies MRJ21 Cassettes MRJ21 Patch Panels	EAZ (Easy Access Zone) Enclosure MRJ21 Ultra Slim Cable Assemblies MRJ21 Cassette Panel MRJ21 and HD Rear Cable Management

Features & Benefits

Application independent copper platform for applications today and into the future - including Gigabit, VoIP & powered Ethernet
Small form factor MRJ21 connector and cabling reduces cable bulk in pathways and spaces, enabling much higher port counts in a smaller space
Factory terminated and tested cassettes and patch panels allow pluggable performance on site
Rapid installation or MACs with pre-tested quality
Modularity significantly reduces time to install or migration from a 10/100BASE-t 2-pair application to a Gigabit Ethernet 4-pair application
Upgrading is as simple as unplugging one cassette and plugging in the new one
Cassettes and patch panels break out high-performance 24-pair solutions to the appropriate wiring patterns for standards-based 10/100BASE-T, Gigabit Ethernet, and other applications
Common cable assembly lengths provide readily available, pluggable solutions, speeding implementation
Additional hardware options continue to be released. Contact your sales engineer or check our website for the latest updates
AMP NETCONNECT MRJ21 products are now a part of the Cisco Technology Developer program. Click here to find out more.

MRJ21 Cable Assemblies

Dense CHAMP style double blade design with offset jackscrews
Contact layout and footprint for differential pairs creates reduced cross-talk and built-in compensation
1.5 to 4 times the port density of 2x6 stacked modular jack (RJ45)
3 times the port density of an RJ21
Jackscrews for positive latching and secure cable retention
Common and custom cable assembly lengths are available - contact you local sales engineer for more information
25-pair, unshielded, 24 AWG conductors
Lead-free (no heavy metals)

Part Number Descriptions	Variation Description	Part Numbers
MRJ21 Cable Assembly, MRJ21 (45° back shell) to RJ45s, Category 5e, CMR Rated, Gray Jacket	Length	1499508-X
MRJ21 Cable Assembly, MRJ21 (180° Back Shell) to MRJ21 (180° Back Shell) CMR (Riser)	Length	1499515-X
MRJ21 Cable Assembly, MRJ21 (180° Back Shell) to MRJ21 (45° Back Shell) CMR (Riser)	Length	1499517-X
MRJ21 Cable Assembly, MRJ21 (180° Back Shell) to MRJ21 (180° Back Shell) CMP (Plenum)	Length	1499518-X
MRJ21 Cable Assembly, MRJ21 (180° back shell) to RJ45s, Category 5e, CMR Rated, Gray Jacket	Length	1499520-X
MRJ21 Cable Assembly, MRJ21 (180° back shell) to MRJ21 (45° back shell), Category 5e, CMP Rating, Blue Jacket	Length	1933061-X

MRJ21 Cassettes

High-performance copper cabling solution
High-density, small form factor connectivity
Factory terminated and tested
Modular, pluggable design
6-port cassettes support applications which use four or fewer pairs including 10BASE-T, 100BASE-T and 1000BASE-T
12-port cassettes support applications which use two or fewer pairs including 10BASE-T and 100BASE-T

Part Number Descriptions	Variation Description	Part Numbers
MRJ21 Cassette, 12-Port, for 2-Pair (10/100/BASE-T) Applications		1479452-1
MRJ21 Cassette, 6-Port, for 4-Pair (10/100/1000BASE-T) Applications		1479459-1

MRJ21 Patch Panels

High-performance copper cabling solution
High-density, small form factor connectivity
Factory terminated and tested
Modular, pluggable design
4-pair patch panels support applications which use four or fewer pairs including 10BASE-T, 100BASE-T and 1000BASE-T
2-pair patch panels support applications which use two or fewer pairs including 10BASE-T and 100BASE-T

Part Number Descriptions	Variation Description	Part Numbers
MRJ21 Patch Panel, Standard, 48-Port, for 2-Pair (10/100/BASE-T) Applications		1435965-1
MRJ21 Patch Panel, Standard, 48-Port, for 4-Pair (10/100/1000BASE-T) Applications		1435971-1
AMPTRAC Patch Panel, MRJ21, Standard (Flush), 24-Port, 4-Pair (10/100/1000BASE-T), 1U (1.75 in)		1777029-2
MRJ21 Patch Panel, Angled, 48-Port, for 4-Pair (10/100/1000BASE-T) Applications		1777052-1

Part Number Descriptions	Variation Description	Part Numbers
EAZ Enclosure	Cover Fasteners	1777215-X
EAZ Enclosure Strain Relief Bracket		1777224-1

Uses same connector and jackscrew design as Standard MRJ21 connectors
Common and additional cable assembly lengths are available - contact your local sales engineer for more information
Enables 25% less power per port than 4 pair connector on active electronics
Improves uptime and space efficiency on site
50-60% less cable mass in pathways and spaces than comparable 4-pair cabling
Improves airflow in cabinets and around active electronics
40% less weight than comparable 4-pair cabling
Gigabit Ethernet Channel performance
Application length restrictions apply. Consult local SE for more information
RoHS compliant

Part Number Descriptions	Variation Description	Part Numbers
MRJ21 Ultra Slim, 180° Back Shell, CMR (Riser) Gray	Length	1933960-X

MRJ21 Cassette Panel

Part Number Descriptions	Variation Description	Part Numbers
MRJ21 Cassette Panel		1479451-1

Applications include new installation and retrofit
Used for MRJ21 or other high-density copper or fiber optic panels
Simple on site assembly - rear or front of rack or cabinet mount
4 depths available – 6 in [152.4 mm], 9 in [228.6 mm], 12 in [304.8 mm], 16 in [406.4 mm]
Enables cascading effect for improved management and access
Tie-down capability on side brackets and back tie-down bar, Can use Velcro™ type tie down, cable ties, or other tie-down straps
Tie-down bar is adjustable for horizontal or vertical cable strain relief, simply flip the bar and tighten thumbscrews

Part Number Descriptions	Variation Description	Part Numbers
Rear Cable Management Bar, for MRJ21 and High Density Patch Panels	Depth	1933352-X

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