English
Data Rate:
100GProduct Origin:
ChinaShipping Port:
shenzhen
FAQ:
Q1: What is a DAC Cable (Direct Attach Copper Cable)?
A1: A high-speed DAC cable is a cost-effective solution for short-distance data transmission, commonly used in data centers, cloud computing, and enterprise networking to connect switches, servers, and storage devices.
Q2: What are the advantages of using DAC cables over optical transceivers?
A2: Passive DAC cables are more affordable, consume less power, and offer lower latency than active optical cables (AOC) or fiber optics, making them ideal for 10G, 25G, 40G, and 100G Ethernet connections.
Q3: What lengths are available for SFP+ DAC, QSFP+ DAC, and QSFP28 DAC cables?
A3: Standard lengths range from 0.5m to 7m, with popular options like 1m DAC, 3m DAC, and 5m DAC cables for rack-to-rack connectivity.
Q4: Are DAC cables compatible with Cisco, HPE, Juniper, Dell, and Arista devices?
A4: Most SFP DAC and QSFP DAC cables are vendor-agnostic, but always verify compatibility with your switch or server model for seamless integration.
Q5: Can high-speed DAC cables support 400G Ethernet?
A5: Yes, QSFP-DD DAC and OSFP DAC cables now support 200G/400G data rates, ideal for hyperscale data centers and HPC (High-Performance Computing).
Q6: Do passive DAC cables require external power?
A6: No, passive copper DAC cables draw power directly from the device, reducing energy costs and heat dissipation in data center environments.
Q7: What is the maximum distance for DAC cable transmission?
A7: Copper DAC cables typically reach up to 7m—beyond this, consider active DAC cables or AOC/fiber optics for longer distances.
Q8: Are DAC breakout cables hot-swappable?
A8: Yes, hot-swappable DAC cables (e.g., QSFP+ to 4x SFP+ DAC) allow flexible deployment without system downtime.
Q9: How to choose the right DAC cable for 10G/40G/100G networks?
A9: Match your switch port type (SFP+, QSFP+, etc.), data rate, and length requirements. For high-density setups, opt for low-profile DAC cables.
Q10: What is the difference between passive DAC and active DAC cables?
A10: Passive DAC cables rely on device power and support shorter distances (up to 7m), while active DAC cables include signal amplification for extended reach (up to 15m) but consume more power.
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Categories
Product Overview The 40G QSFP+ ZR4 80KM LC Optical Transceiver delivers industry-leading 80km single-mode fiber transmission using EML laser and APD receivers. For carrier-grade 5G transport, metro DCI, and inter-city backbone networks. PRODUCT FEATURES Support line rates for 41.25 Gb/s; Lane bit rate 10.3125 Gb/s 40GE Up to 80km transmission on single mode fiber LAN WDM EML laser and APD Support Multi-Pin function with IntL/RxLOSL and LPMode/TxDIS High speed I/O electrical interface (CAUI-4) I2C interface with integrated Digital Diagnostic monitoring QSFP+ MSA package with duplex LC connector Single +3.3V power supply Power dissipation: Commercial：< 4.5W; Industrial：< 5.5W Complies with EU Directive 2015/863/EU 40G LR4 10KM 40G LR4 10KM (COB) 40G ER4 40KM 40G eER4 60KM 40G ZR4 80KM 40G 40G 40G 40G 40G 1271nm, 1291nm, 1311nm, 1331nm 1271nm, 1291nm, 1311nm, 1331nm 1271nm, 1291nm, 1311nm, 1331nm 1296nm, 1300nm, 1305nm, 1309nm 1296nm, 1300nm, 1305nm, 1309nm 10KM 10KM 40KM 60KM 80KM LC LC LC LC LC SM SM SM SM SM DDM DDM DDM DDM DDM COM: 0°C ~70°C IND: -40°C ~85°C COM: 0°C ~70°C COM: 0°C ~70°C IND: -20°C ~85°C COM: 0°C ~70°C IND: -40°C ~85°C COM: 0°C ~70°C IND: -40°C ~85°C FAQ: Q1: What is a 40G QSFP Optical Module? A1: A 40G QSFP (Quad Small Form-factor Pluggable) module is a hot-swappable transceiver that supports 40Gbps data transmission. It uses a 4-channel parallel design and is widely deployed in data centers and high-performance computing networks. Q2: What are the common types of 40G QSFP modules? A2: QSFP+ SR4 (850nm multimode, 100m) QSFP+ LR4 (1310nm single-mode, 10km) QSFP+ ER4 (1310nm single-mode, 40km) QSFP+ BiDi (Single-Fiber Bidirectional) Q3: How do I check if a 40G QSFP module is compatible with my device? A3: Verify three aspects: Switch vendor compatibility lists Matching fiber type (MMF/SMF) Required transmission distance Q4: How to resolve overheating in 40G QSFP modules? A4: Solutions: Ensure adequate device ventilation Use modules with heat dissipation fins Avoid sustained 100% bandwidth utilization Q5: What precautions should I take when installing 40G QSFP modules? A5: Key operational guidelines: Clean fiber connectors before insertion to prevent dust from disrupting optical signal transmission. Ensure adequate ventilation around devices; reserve thermal headroom for high-heat modules. Configure port aggregation mode on the switch when using breakout applications. Q6: What's the difference between SFP, QSFP and QSFP-DD modules? A6: SFP (1-25G), QSFP (40-100G), and QSFP-DD (400G+) differ in form factor and bandwidth capacity. QSFP-DD doubles QSFP28's density with 8-lane electrical interfaces. Q7: How does ETU-Link ensure compatibility with major brands? A7: We maintain a multi-vendor test lab with full protocol support (Ethernet/InfiniBand/Fibre Channel) and 100% compatibility verification before shipment Q8: What temperature ranges do your modules support? A8: Commercial grade (0°C to +70°C) Extended grade (-20°C to +85°C) Industrial grade (-40°C to +85°C) for harsh environments. Q9: How does ETU-Link achieve 40G QSFP+ interoperability? A9: Through: Multi-vendor switch testing Firmware customization for legacy equipment MSA-compliant electrical interfaces Q10: Do 40G QSFP+ modules support DDM/DOM monitoring? A10: Standard feature including: Real-time temperature (±1°C accuracy) Tx/Rx power (µW/dBm display) Laser bias current
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