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Cisco Catalyst 3750X Switches - Refurbished, Used, New
Cisco Catalyst 3750-X switches are stackable Gigabit access switches for campus wiring closets and branch offices, sold in 24- and 48-port data and PoE+ models and in SFP-based aggregation models, with the feature set sold as a LAN Base, IP Base or IP Services version. Each switch has a rear slot for a C3KX network module that supplies the uplinks, two bays for hot-swappable C3KX power supplies, and StackWise Plus ports that join up to nine switches into one logical unit. This collection is the parts that keep a 3750-X stack running: network modules, power supplies, fans, stacking cables, blanks and the notched power cord. NetworkTigers sells Catalyst 3750-X parts refurbished, used and new. Every unit is tested before it ships so it works when it arrives.
Catalyst 3750-X modules, power and stacking
| Part | Used for | Shop |
|---|---|---|
| C3KX-NM-1G | Network module with 4x 1G SFP uplink ports | C3KX-NM-1G |
| C3KX-NM-10G | Network module with 10G SFP+ uplinks: run two ports at 10G, or populate the slots with 1G SFPs | C3KX-NM-10G |
| C3KX-NM-10GT | Network module with 2x 10G RJ45 copper uplinks | C3KX-NM-10GT |
| C3KX-SM-10G | Service module with 2x 10G SFP+ uplinks that also adds hardware flow monitoring and port encryption | C3KX-SM-10G |
| C3KX-PWR-350WAC | 350W AC power supply for data-only switches | C3KX-PWR-350WAC |
| C3KX-PWR-715WAC, C3KX-PWR-715WAC/2 | 715W AC power supply for PoE+ switches, standard and secondary versions | C3KX-PWR-715WAC | C3KX-PWR-715WAC/2 |
| C3KX-PWR-1100WAC, C3KX-PWR-1100WAC/2 | 1100W AC power supply for full PoE+ on 48 ports, standard and secondary versions | C3KX-PWR-1100WAC | C3KX-PWR-1100WAC/2 |
| C3KX-PWR-440WDC | 440W DC power supply for telco and DC-plant racks | C3KX-PWR-440WDC |
| CAB-STACK-50CM, CAB-STACK-1M, CAB-STACK-3M | StackWise Plus stacking cables in 50 cm, 1 m and 3 m lengths | CAB-STACK-50CM | CAB-STACK-1M | CAB-STACK-3M |
| C3KX-FAN-23CFM | Replacement fan module | C3KX-FAN-23CFM |
| C3KX-PS-BLANK, CAB-3KX-AC | Blank cover for an empty power supply bay, and the notched AC power cord the C3KX supplies require | C3KX-PS-BLANK | CAB-3KX-AC |
| Related Catalyst | Newer and neighboring access switch lines | Catalyst 3850 | Catalyst 3650 | Catalyst 2960X | All Catalyst |
Which Catalyst 3750-X parts do I need?
Match the power supply to the switch. A data-only 3750-X ships with a 350W supply; a PoE+ switch needs the 715W supply, or the 1100W supply if you want full 30W PoE+ on all 48 ports at once. A second supply in the empty bay gives you redundancy and, with StackPower cables, lets switches in a stack share power. The /2 part numbers are the same supplies packaged as a secondary unit. Choose the network module by uplink: C3KX-NM-1G for 1G SFP fiber, C3KX-NM-10G for 10G SFP+ fiber or DAC, C3KX-NM-10GT for 10G over Cat6a copper, and C3KX-SM-10G when you also want flow export from the switch. The 1G and 10G modules fit the Catalyst 3560-X as well. For stacking, 50 cm cables suit adjacent switches, 1 m suits a stack with gaps for patch panels, and 3 m lets you close the ring across a rack. Tell us whether your switch runs the LAN Base, IP Base or IP Services version if the module choice depends on it.
Frequently asked questions
Does a 3750-X need the notched power cord?
Yes. The C3KX power supplies have a keyed inlet and accept the CAB-3KX-AC cord rather than a standard C13 cord. Each supply we ship can include the cord; check the listing or ask.
Can a Catalyst 3750-X stack with a 3750G or 3750E?
A 3750-X stacks with the 3750-E over StackWise Plus using the same CAB-STACK cables. Mixing in the older 3750G works but the whole stack drops to the slower StackWise speed, so most buyers keep 3750-X and 3750-E stacks separate from 3750G stacks.
Is the network module hot swappable?
Yes. The rear C3KX network module and the power supplies can be inserted or removed with the switch running. Power supplies, fans and modules are sold separately so you can build the uplinks and redundancy your closet needs.
NetworkTigers has sold enterprise network equipment since 1996. Every module, power supply and cable carries the NetworkTigers 365-day warranty. Need enough to refit a whole stack? Ask us for a quote.
Cisco CAB-STACK-50CM Catalyst 3750 Series 1.6 Ft Switch Stacking Cable
$ 47.99
Call if you need more
Cisco C3KX-NM-10G 2x 10GB SFP+ 2x 1GB SFP Switch Module for 3750X and 3560X
$ 45.99
$ 48.99
Call if you need more
Cisco C3KX-NM-1G Catalyst 3750X Series 4x 1GB SFP Switch Module
$ 29.99
Call if you need more
Cisco C3KX-PWR-1100WAC Catalyst 3750X Series 1100W AC Switch Power Supply
$ 29.99
$ 33.99
Call if you need more
Cisco C3KX-PWR-715WAC Catalyst 3750X Series 715W AC Switch Power Supply
$ 31.99
$ 54.99
Call if you need more
Cisco CAB-STACK-1M Catalyst 3750X Series 1m StackWise Switch Stacking Cable
$ 19.99
Call if you need more
Cisco C3KX-PWR-350WAC Catalyst 3750X Series 350W AC Switch Power Supply
$ 29.99
$ 37.99
Call if you need more
Cisco CAB-STACK-3M Catalyst 3750X Series 3m StackWise Switch Stacking Cable
$ 39.99
Call if you need more
Cisco CAB-3KX-AC Catalyst 3750X Series Notched Switch Power Cord
Cisco C3KX-PWR-715WAC/2 Catalyst 3750X Series 715W AC Switch Power Supply
$ 39.99
$ 54.99
Call if you need more
Cisco C3KX-FAN-23CFM Catalyst 3750X Series Switch Fan
$ 43.99
Call if you need more
Cisco C3KX-SM-10G Catalyst 3750X 2x 10GB SFP+ Switch Module
$ 28.99
$ 39.99
Call if you need more
Cisco C3KX-PWR-1100WAC/2 Catalyst 3750X Series 1100W AC Switch Power Supply
$ 29.99
Call if you need more
NEW Cisco CAB-STACK-1M Catalyst 3750X Series 1m StackWise Switch Stacking Cable
$ 42.99
Call if you need more
NEW Cisco CAB-STACK-3M Catalyst 3750X Series 3m StackWise Switch Stacking Cable
$ 41.99
Call if you need more
NEW Cisco C3KX-NM-1G Catalyst 3750X 4x 1GB SFP Switch Module
$ 41.99
Call if you need more
NEW Cisco C3KX-PWR-715WAC Catalyst 3750X Series 715W AC Switch Power Supply
$ 198.99
Call if you need more
Cisco C3KX-PWR-440WDC Catalyst 3750X 440W DC Switch Power Supply
$ 337.99
Call if you need more
Cisco C3KX-NM-10GT 2x 10GB RJ45 Switch Module for Catalyst 3750X and 3560X
$ 133.99
Call if you need more
NEW Cisco CAB-STACK-50CM Catalyst 3750 Series 50cm Switch Stacking Cable
NEW Cisco CAB-3KX-AC Catalyst 3750X Series Notched Switch Power Cord
NEW Cisco C3KX-SM-10G Catalyst 3750X 2x 10GB SFP+ Switch Module
$ 142.99
Call if you need more
NEW Cisco C3KX-PWR-715WAC/2 Catalyst 3750X Series 715W AC Switch Power Supply
$ 198.99
Call if you need more
