United States$5,000,000+
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Anthony Blake
5
Copper 10G ports worked flawlessly.
WS-X4908-10G-RJ45
Cisco 4900M Switch WS-X4908-10G-RJ45
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Name:
WS-X4908-10G-RJ45
- Description:
- Cisco 4900M Switch WS-X4908-10G-RJ45
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- Brand:
- Cisco
- GTIN:
- 882658245596
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- List Price:
$4,000.00
- Price:
$1,757.0056.1% off
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WS-X4908-10G-RJ45 Overview
WS-X4908-10G-RJ45 is a high-performance modular switch that features a resilient architecture and supports versatile power options including redundant power supply configurations. Designed with 48 x 10G RJ45 ports, this product delivers robust stacking capabilities and scalable integration for high-density network environments.
The switch offers advanced switching performance with a focus on optimized connectivity and low latency, making it ideal for enterprise core, data center aggregation, and campus deployments. Its design enables seamless stacking expansion and incorporates efficient chassis-based power management to ensure maximum network uptime.
WS-X4908-10G-RJ45 price is $1,757.00, a 56.1% saving from the Cisco list price of $4,000.00. WS-X4908-10G-RJ45 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for WS-X4908-10G-RJ45 for additional pricing. Browse the full Cisco Catalyst 4900 Switches series or explore all Cisco products.
WS-X4908-10G-RJ45 Specifications
- Product Type
- Switch
- Power Source
- Redundant Power Supply / AC Power Supply
- Layer Supported
- Layer 2 / Layer 3
- Form Factor
- Chassis
- Power Consumption
- N/A
- Number of Ethernet Ports
- 24–48 Ports
- Number of Downlink Ports
- 48 Ports
- Manageable
- Managed
- Ethernet Technology
- 10/100/1000
- Media Type Supported
- Twisted Pair
- Redundant Power Supply Supported
- N/A
- Manufacturer Part Number
- WS-X4908-10G-RJ45
- Uplink Configuration
- 10G
- IOS
- IP Services
- POE Support
- Non POE
- SFP Ports
- N/A
- Memory
- 256 MB
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Port/Expansion Slot Details
- 48 x 10G RJ45 ports
- Flash Memory
- 64 MB
- Switching Capacity
- 480 Gbps
- Switching Capacity with Stacking
- 960 Gbps
- Product Name
- Cisco WS-X4908-10G-RJ45 Modular Switch
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
WS-X4908-10G-RJ45 Use Case
Data Center Core Aggregation with WS-X4908-10G-RJ45
In a mid-sized data center, network architects deploy the WS-X4908-10G-RJ45 module in a Cisco 4900M Switch to aggregate eight copper-based 10G links from edge switches over existing Cat6a cable. This configuration delivers sub-microsecond latency, 160 Gbps backplane capacity and non-stop forwarding, ensuring predictable application performance and simplified capacity expansion without costly fiber rewiring.
Enterprise Campus 10G Uplinks over Copper
An enterprise IT team uses the WS-X4908-10G-RJ45 in campus wiring-closet distribution switches to upgrade from 1G to 10G uplinks across multiple floors via existing Cat6 infrastructure. This approach reduces deployment time by 50 percent, cuts capital expenses on fiber transceivers and supports seamless high-bandwidth services—VoIP, video conferencing and cloud-hosted applications—while maintaining end-to-end QoS.
Virtualization and iSCSI Storage Convergence
In a virtualized server farm, system engineers install the WS-X4908-10G-RJ45 card to connect VMware ESXi hosts directly to a 10G iSCSI SAN over copper Ethernet. The solution delivers deterministic throughput and hardware-based flow control, boosting VM-to-storage IOPS by up to 40 percent and simplifying cabling by consolidating storage and LAN traffic onto eight high-performance RJ45 ports.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
 WS-X4908-10G-RJ45 |  WS-C4900M |  WS-C4948E-F |  WS-C4948-10GE-S |  4900M-X2-CVR | |
|---|---|---|---|---|---|
| Depth | N/A | 15 inches | 17.8 inches | 18 inches | 15 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 64 MB | 32 MB | 32 MB | 64 MB | 256 MB |
| Form Factor | Chassis | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | N/A | 1.75 inches | 1.73 inches | 1.75 inches | 1.75 inches |
| IOS | IP Services | IP Services | LAN Lite | IP Services | IP Services |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100 | 10/100/1000 | 10/100/1000 |
| Layer Supported | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 | Layer 2 / Layer 3 | Layer 2 / Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | WS-X4908-10G-RJ45 | WS-C4900M | WS-C4948E-F | WS-C4948-10GE-S | 4900M-X2-CVR |
| Media Type Supported | Twisted Pair | Twisted Pair / Fiber | Twisted Pair | Combo | Twisted Pair / Fiber / Combo |
| Memory | 256 MB | 256 MB | 256 MB | 256 MB | 512 MB |
| Number of Downlink Ports | 48 Ports | 24 Ports | 48 Ports | 48 Ports | 24 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports |
| POE Support | Non POE | POE+ | Non POE | Non POE | POE+ |
| Port/Expansion Slot Details | 48 x 10G RJ45 ports | Modular design supporting interchangeable interface modules | 48 fixed 10/100 Ethernet ports with 4 dedicated 1G SFP uplinks | 48 Ethernet ports (10/100/1000) and 4 10-Gigabit SFP+ uplink ports | 2 expansion slots supporting additional SFP modules |
| Power Consumption | N/A | N/A | 165 W | N/A | 200 W |
| Power Source | Redundant Power Supply / AC Power Supply | Redundant Power Supply / AC Power Supply | AC Power Supply | Redundant Power Supply / AC Power Supply | AC Power Supply |
| Product Name | Cisco WS-X4908-10G-RJ45 Modular Switch | WS-C4900M Series Switch | Cisco Catalyst 4948E-F Switch | Cisco WS-C4948-10GE-S | 4900M-X2-CVR High-Performance Enterprise Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | N/A | Yes | No | Yes | Yes |
| SFP Ports | N/A | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 480 Gbps | N/A | 32 Gbps | N/A | 480 Gbps |
| Switching Capacity with Stacking | 960 Gbps | N/A | 128 Gbps | N/A | 960 Gbps |
| Uplink Configuration | 10G | 10G | 1G | 10G | 10G |
| Weight | N/A | 15 lbs | 22 lbs | N/A | 15 lbs |
| Width | N/A | 17 inches | 17.6 inches | 19 inches | 17.5 inches |
Reviews & Ratings
A
Ayesha Siddiq
4
Easy integration.
M
Markus Vogel
4
Reliable connectivity.
H
Hamid Raza
5
Good performance.
L
Laura Evans
5
No issues.
Questions & Answers
What is the Cisco WS-X4908-10G-RJ45 module?
The WS-X4908-10G-RJ45 is a Cisco Catalyst 4900M switch line card offering eight 10 Gigabit Ethernet RJ45 ports for high-density, copper-based 10G connectivity.
How many 10G RJ45 ports does the WS-X4908-10G-RJ45 provide?
The WS-X4908-10G-RJ45 provides eight 10GBase-T RJ45 ports supporting up to 10 Gbps per port over standard Cat6a/Cat7 cables.
Which Cisco switch chassis support the WS-X4908-10G-RJ45?
This module is compatible with the Cisco Catalyst 4900M and Cisco 4900M-E series chassis running a supported IOS release.
What cable types are supported by the WS-X4908-10G-RJ45?
The module supports standard Cat6a and Cat7 twisted-pair copper cables for 10GBase-T connections up to 30 meters.
What is the maximum switching capacity of the WS-X4908-10G-RJ45?
In a fully populated Cisco Catalyst 4900M chassis, the WS-X4908-10G-RJ45 contributes to a switching capacity of up to 240 Gbps per switching fabric.
Does the WS-X4908-10G-RJ45 support Power over Ethernet (PoE)?
No. The WS-X4908-10G-RJ45 is a data-only line card and does not provide PoE or PoE+ capability.
Which IOS features are supported on the WS-X4908-10G-RJ45?
The module supports full Cisco IOS feature sets, including advanced QoS, IPv4/IPv6 routing, MPLS, security ACLs, and multicast routing.
What IEEE standards does the WS-X4908-10G-RJ45 comply with?
The WS-X4908-10G-RJ45 is IEEE 802.3an compliant for 10GBase-T, and also supports IEEE 802.3x flow control and 802.1Q VLAN tagging.
What is the typical latency per port on the WS-X4908-10G-RJ45?
Port-to-port latency on the WS-X4908-10G-RJ45 is typically under 4 microseconds, ensuring wire-speed performance for latency-sensitive applications.
What is the power consumption of the WS-X4908-10G-RJ45?
The WS-X4908-10G-RJ45 consumes approximately 80W of power under full load, subject to Cisco Catalyst 4900M chassis power-supply capacity.
How do I install the WS-X4908-10G-RJ45 in a Catalyst 4900M chassis?
Power down the chassis, slide the WS-X4908-10G-RJ45 into an available slot, secure it with cage nuts, reconnect power, and verify with CLI commands 'show module' and 'show interface status'.
Can the WS-X4908-10G-RJ45 be used in a switch stack?
Yes. When installed in a Cisco Catalyst 4900M chassis with the appropriate stacking module, all WS-X4908-10G-RJ45 ports participate in the unified stack fabric.
What redundancy features are supported by the WS-X4908-10G-RJ45?
Redundancy is provided by dual supervisor engines and hot-swappable power supplies in the Cisco Catalyst 4900M chassis; the line card itself supports in-service software upgrades (ISSU).
What warranty and support options are available for the WS-X4908-10G-RJ45?
Cisco offers a limited lifetime hardware warranty plus optional SMARTnet service contracts that include 24/7 technical support, software updates, and advance replacement.
Are software licenses required for advanced features on the WS-X4908-10G-RJ45?
Advanced features such as MPLS and high-density security require Cisco IOS feature licenses (IP Base, IP Services or Enterprise Services) on the switch supervisor.
Where can I purchase genuine Cisco WS-X4908-10G-RJ45 modules?
Genuine Cisco WS-X4908-10G-RJ45 modules are available through Cisco authorized resellers, the Cisco Commerce Workspace (CCW) portal, or Cisco’s online store.