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ASR5K-042GE-SX-K9
QGLC Rev2 4-Port Ethernet 1000 Card w/SX MM Short Haul SFP
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ASR5K-042GE-SX-K9 is a high-performance Ethernet module engineered for the Cisco ASR 5000 Series Aggregation Services Routers. It delivers reliable gigabit connectivity with support for 1Gbps data rates via SFP fiber optic ports, ensuring streamlined installation and robust performance in demanding network environments.
Designed for seamless integration into modular router chassis, the ASR5K-042GE-SX-K9 supports essential protocols such as TCP/IP while maintaining full compatibility with Cisco’s high-end routing platforms. This module is ideally suited for expanding network capacity, upgrading data center connectivity, and enhancing high-speed communication links without compromising on reliability or efficiency.
ASR5K-042GE-SX-K9 price for new stock is $16,182.60, a 44.2% saving from the Cisco list price of $29,000.00. ASR5K-042GE-SX-K9 refurb price is $4,462.50. ASR5K-042GE-SX-K9 is in stock and available for next-day dispatch. (terms applied)
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| ASR5K-042GE-SX-K9 |  PA-T3/E3-EC |  A9K-8T-L |  WS-X6848-TX-2TXL |  EHWIC-3G-HSPA-U | |
|---|---|---|---|---|---|
| Compatibility | Cisco ASR 5000 Series | Cisco, Juniper, Dell, HP | Cisco | Cisco | Cisco ISR Routers |
| Connector Type | SFP | Proprietary Modular T3/E3 Connector | SFP+ | RJ-45 / SFP+ | EHWIC Slot |
| Data Rate | 1G | T3: 45 Mbps / E3: 34 Mbps | 10G | 1Gbps (copper) / 10Gbps (uplink) | Up to 7.2Mbps |
| Form Factor | Modular | PCIe | Modular | Modular | Modular |
| Interface Ports | Gigabit Ethernet SFP | T3/E3 | Ethernet | 48 x RJ-45, 2 x SFP+ | Cellular |
| Max Speed | 1Gbps | T3: 45 Mbps / E3: 34 Mbps | 10Gbps | 1Gbps (copper) / 10Gbps (uplink) | 7.2Mbps |
| Module Type | Ethernet | WAN | Ethernet | Ethernet | 3G HSPA |
| Product Name | ASR5K-042GE-SX-K9 | PA-T3/E3-EC | A9K-8T-L | WS-X6848-TX-2TXL | Cisco EHWIC-3G-HSPA-U |
| Product Type | Network Module | WAN Module | Network Module / Network Card | Network Module / Network Card | WAN Module |
| Supported Protocols | TCP/IP | TCP/IP | TCP/IP | TCP/IP | TCP/IP |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviewed on the 20 March 2025
The Rev2 QGLC is a great improvement. The 4-port SX configuration is perfect for our short-haul internal fiber links. Steady and very reliable.
Reviewed on the 16 June 2026
Excellent port density for Gigabit Ethernet. The short-haul SFP support is perfect for our datacenter interconnects. Performance has been flawless since installation.
Reviewed on the 26 May 2024
Robust and efficient. This card provides consistent Gigabit speeds across all four ports. A very dependable hardware component for the ASR 5000 system.
Reviewed on the 17 June 2025
High build quality and easy management. The Rev2 card offers improved thermal performance and rock-solid stability. A great addition to our core infrastructure.
Reviewed on the 27 March 2025
Steady performance and easy installation. This 4-port GE card provides the reliable fiber connectivity we need for our internal network segments. Highly recommended.
The ASR5K-042GE-SX-K9 QGLC Rev2 is a 4-port 1000BASE-SX Gigabit Ethernet card with Short Haul multimode SFPs designed for Cisco ASR 5000 series routers.
This card is compatible with Cisco ASR 5000 series routers that provide a QSFP slot, including ASR 5001, 5004 and 5008 platforms.
It includes four Cisco-qualified SX multimode short haul SFPs supporting distances up to 550 meters over 50/125 µm MMF.
Each port delivers up to 1 Gbps full-duplex, enabling aggregated throughput of 4 Gbps per card.
Power down your ASR 5000 series router, insert the card into an available slot, secure it with retention screws, then power up and verify with the show diag command.
No, hot swapping is not supported. You must power down the router before installing or removing the card.
Use OM1, OM2, OM3 or OM4 multimode fiber with 50/125 µm core to ensure optimal signal integrity up to 550 m.
Yes, it supports IEEE 802.3ad link aggregation (LACP) for enhanced bandwidth and redundancy.
Typical power draw is 7 W per card under full load; account for this in your overall router power budget.
Manage it via CLI or SNMP using standard Cisco IOS commands such as show interface and configure terminal.
The operating temperature range is 0 °C to 40 °C (32 °F to 104 °F) per Cisco environmental specifications.
Yes, it is covered by Cisco’s standard 1-year hardware warranty and eligible for extended SMARTnet support.
No, the SX SFPs are optimized for multimode fiber only. For single-mode applications, choose a 1000BASE-LX SFP.
Integrated SFP diagnostics provide optical power levels, temperature, and vendor information via the transceiver diagnostic monitoring interface.
VLAN support is determined by the ASR 5000 series router OS; the card itself supports all VLANs configured on the parent router.
Firmware and driver updates are available on Cisco’s official support website under the ASR 5000 series downloads section.
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