United States
Name:
WS-X4148-RJ21
- Description:
- Catalyst 4500 32-10/100 (RJ-45),2-GE(GBIC) Linecard
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- Brand:
- Cisco
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- GTIN:
- 662542152618
- Warranty:
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3 Year Extended Warranty
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If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
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Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
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WS-X4148-RJ21 Overview
WS-X4148-RJ21 is an Ethernet module engineered for high-density network deployments, featuring 48 RJ-45 ports that deliver reliable 10/100 Mbps connectivity. Built for integration into Cisco modular switching systems, this module is designed to enhance network capacity while maintaining robust and efficient data transmission in enterprise environments.
This modular card is fully compatible with Cisco Catalyst platforms and supports TCP/IP protocol along with industry-standard auto-negotiation, jumbo frames, and QoS features. Its plug-and-play form factor and streamlined installation make it an ideal solution for upgrading server network interfaces, expanding data center capacity, and connecting to high-speed networks in a variety of commercial and industrial settings.
What is the price of WS-X4148-RJ21?
Pricing for WS-X4148-RJ21 is available on request. Get immediate quote or for exclusive discounts, opt for bulk quotation for WS-X4148-RJ21.
Explore more options from Network Modules And Cards or explore other Cisco products.
WS-X4148-RJ21 Specifications
| Product Type | Network Module / Network Card |
| Module Type | Ethernet Module |
| Data Rate | 10/100Mbps |
| Connector Type | RJ-45 |
| Supported Protocols | TCP/IP |
| Form Factor | Modular |
| Operating Temperature | 0 to 70°C |
| Storage Temperature | -40 to 85°C |
| Input Voltage | 3.3V |
| Compatibility | Cisco |
| Max Speed | 100Mbps |
| Supported Features | Auto-negotiation, Jumbo Frames, QoS |
| Power Consumption | N/A |
| Interface Ports | Ethernet |
| Expansion Slots | N/A |
| Product Name | WS-X4148-RJ21 |
| Height | N/A |
| Width | N/A |
| Depth | N/A |
| Weight | N/A |
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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|---|---|---|---|---|---|
| Compatibility | Cisco Catalyst Switches | Cisco | Cisco, Juniper, Arista, Dell, HP | Cisco | Cisco, Juniper, Arista, Dell, HP |
| Connector Type | SFP | RJ-45 | SFP+ | RJ-45 | SFP+ |
| Data Rate | 10/100 Mbps | 10/100Mbps | 10Gbps | 1Gbps | 10Gbps |
| Depth | N/A | N/A | 1.7 inches | N/A | N/A |
| Expansion Slots | N/A | N/A | SFP+ | N/A | N/A |
| Form Factor | Modular | Modular | PCIe | Modular | PCIe |
| Height | N/A | N/A | 0.3 inches | N/A | N/A |
| Input Voltage | N/A | 3.3V | 3.3V | 3.3V | 3.3V |
| Interface Ports | SFP | Ethernet | Ethernet | Ethernet | Ethernet |
| Max Speed | 100Mbps | 100Mbps | 10Gbps | 1Gbps | 10Gbps |
| Module Type | Ethernet | Ethernet Module | Ethernet Module | Ethernet | Ethernet |
| Operating Temperature | 0°C to 40°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | N/A | N/A | 15W | 15W | 12W |
| Product Name | WS-X4248-FE-SFP | WS-X4148-RJ21 | WS-X45-SUP6L-E | WS-X4148-RJ | C4KX-FAN-R= |
| Product Type | Network Module / Network Card | Network Module / Network Card | Network Module | Network Module / Network Card | Network Module / Network Card |
| Storage Temperature | -40°C to 70°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Features | Auto-negotiation, QoS, Jumbo Frames | Auto-negotiation, Jumbo Frames, QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS |
| Supported Protocols | TCP/IP | TCP/IP | TCP/IP, iSCSI | TCP/IP | TCP/IP, iSCSI |
| Weight | N/A | N/A | 1.2 lbs | N/A | N/A |
| Width | N/A | N/A | 4.4 inches | N/A | N/A |
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Questions & Answers
Q
What is the Cisco Catalyst 4500 WS-X4148-RJ21 line card?
A
The WS-X4148-RJ21 is a Catalyst 4500 series line card offering 32 10/100 RJ-45 ports and 2 GE uplink slots for enhanced enterprise switching.
Q
How many ports are available on the WS-X4148-RJ21?
A
This line card delivers 32 Ethernet 10/100 RJ-45 ports and two Gigabit Ethernet GBIC uplink ports.
Q
Which supervisors are compatible with WS-X4148-RJ21?
A
The WS-X4148-RJ21 is compatible with Supervisor Engine II, II+, III, III+, and IV modules in Catalyst 4500 chassis.
Q
What IOS software does WS-X4148-RJ21 support?
A
It supports Cisco IOS Software versions 12.2(18)E, 12.2(18)SXF, 15.0, and later 4500 platforms releases.
Q
How do I install the WS-X4148-RJ21 line card?
A
Power off the Catalyst 4500 chassis, slide the line card into the desired slot, secure the captive screws, then power on for automatic detection.
Q
Is the WS-X4148-RJ21 hot-swappable?
A
Yes, the WS-X4148-RJ21 supports hot-swap when used with a redundant Supervisor Engine IV and appropriate power redundancy.
Q
What is the switching capacity of WS-X4148-RJ21?
A
It delivers up to 16 Gbps of Layer 2/3 switching capacity per card.
Q
Does WS-X4148-RJ21 support VLAN and QoS features?
A
Yes, it supports full IEEE 802.1Q VLAN tagging, 802.1p QoS, ACLs, and advanced traffic prioritization.
Q
How does WS-X4148-RJ21 handle redundancy?
A
Paired with a redundant Supervisor Engine and power supplies, the card enables high availability with nonstop forwarding and stateful switchover.
Q
What are the power requirements for WS-X4148-RJ21?
A
It draws approximately 75 W maximum; ensure chassis power modules can deliver at least 200 W per card for full redundancy.
Q
What environmental conditions are required?
A
Operate at 0 °C to 40 °C, 10%–85% relative humidity, non-condensing, with chassis cooling as per Catalyst 4500 guidelines.
Q
How can I verify WS-X4148-RJ21 operation?
A
Use the “show module” and “show interfaces status” IOS commands to confirm module status and port operational state.
Q
What warranty covers the WS-X4148-RJ21?
A
Cisco provides a limited lifetime hardware warranty for end users plus Access to the Cisco Technical Assistance Center (TAC).
Q
Is WS-X4148-RJ21 still supported or end-of-life?
A
The WS-X4148-RJ21 is in extended support; check Cisco’s EOL announcement for replacement options like the 4500X series line cards.
Q
Can WS-X4148-RJ21 be used in stacking or VSS?
A
While Catalyst 4500 doesn’t support VSS, it supports campus stacking via Cisco FlexStack modules on compatible chassis.
Q
What are common replacement upgrades for WS-X4148-RJ21?
A
Consider Cisco Catalyst 4500X WS-C4506-E with 48-port gigabit line cards or Catalyst 4900M series for higher density and performance.
