A9K‑4T‑L Specifications
Cisco 4‑Port 10 Gigabit Ethernet (10 GE) Low Queue Line Card
Manufacturer: Cisco
Manufacturer Model: A9K‑4T‑L
Product Line: Cisco ASR 9000 Series Ethernet Line Cards
Product Series: 4‑Port 10GE Low Queue
Product Type: Ethernet Line Card
Product Name: Cisco 4‑Port 10GE Low Queue Line Card
KEY FEATURES:
Port Count: 4 × 10 Gigabit Ethernet ports (requires XFP modules)
Interface Type: 10 GE (supports 10 Mb/s, 100 Mb/s, 1 Gb/s via compatible optics)
Queue Scale: Low Queue variant (approx. 8 queues per port)
Memory: 4 GB DRAM onboard
Hot-Swap Support: Yes
PERFORMANCE:
Connectivity Support: 10 Mb/s, 100 Mb/s, 1 Gb/s, and 10 Gbps Ethernet via suitable optics
Physical Dimensions: approx. 35.56 cm × 4.37 cm × 52.07 cm (14″ × 1.72″ × 20.5″)
Weight: ~6.35 kg to ~8.62 kg (14 lb to 19 lb) depending on revision
Typical/Max Power Consumption: ~310 W–565 W typical, up to ~350 W–630 W maximum depending on revision
ENVIRONMENTAL & RELIABILITY:
Operating Temperature: 5 °C to 40 °C (41 °F to 104 °F)
Storage Temperature: ‑40 °C to 70 °C (‑40 °F to 158 °F)
Operating Humidity: 10% to 85% RH
Storage Humidity: Up to 95% RH
Designed for carrier-class, service provider aggregation networks
PHYSICAL:
Form Factor: Modular line card for Cisco ASR 9000 Series chassis
Typical Dimensions: approx. 35.56 cm × 4.37 cm × 52.07 cm (14″ × 1.72″ × 20.5″)
Weight: ~6.35 kg to ~8.62 kg (14 lb to 19 lb)
Slot/Installation: Requires an appropriate slot in the ASR 9000 chassis and compatible fabric/backplane
COMPATIBILITY & NOTES:
Compatible Devices: Cisco ASR 9000 Series routers (e.g., ASR‑9006, ASR‑9010)
Requires XFP optics for 10‑GE ports
Ensure chassis fabric/backplane, power, cooling, software version (IOS XR) and line card licensing are appropriate
Low Queue variant provides fewer total queues compared to Medium Queue (-B) or High Queue (-E) variants — plan scale accordingly

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