The advantages of Passive Direct Attach Copper (DAC) cables over fiber optic and RJ45 cables
Direct Attach Copper (DAC) cables are becoming increasingly popular in the networking industry. Our passive QSFP+ 40G DAC Twinax cable is a cost-effective alternative to RJ45 and fiber optic cables, with energy efficiency and low latency. It is an excellent choice for short-distance structured cabling between switches and routers on one side and servers and storage on the other, whether in Top of Rack (ToR), Adjacent Rack, 40G stacking switches or similar Applications.
No heat generation and suitable for extreme ambient temperatures - ideal for data centers
QSFP+ DAC consists of twinaxial copper cables connected to QSFP+ connectors at both ends and provides an electronic connection directly into the active components. Thanks to its thermal design, this passive cable consumes less than 0.15W, reducing your power consumption and therefore your costs. Since it does not produce heat, it is much more versatile in use, even in extreme ambient temperatures of up to 70 C°, which in turn makes it particularly valuable for data centers.
Cheaper and easier to use than fiber optic
DAC cabling has a comparatively simple internal structure with fewer components than fiber optic cables. This cable structure enables a lower purchase price and also saves you from purchasing separate GBIC transceivers. This in turn makes it easier to use because you have to coordinate fewer components. When storing used cables, in contrast to fiber optic cables, you have to pay less attention to checking and cleaning them before using them again. If you're upgrading your network or replacing individual parts, the cable's hot-swapping capability ensures a seamless transition. Just note that passive DAC cables are not suitable for long-distance use - Their transmission range is limited to 7 m.
Lower latency than RJ45 twisted pair patch cables
This Direct Attach Copper Twinax cable allows data transfer up to 40 Gbit/s. Its unique structure and data transmission also ensure particularly low latency.

Please note: This passive QSFP+ 40G DAC Twinax cable is MSA compliant and is therefore designed, programmed and tested for use with switches and routers from Cisco, Intellinet Network Solutions, ZyXEL, TP-Link, Ubiquiti , D-Link, Edimax, Allnet, Allied Telesis, Digitus, KTI Networks, LevelOne, PLANET, Tenda, TRENDnet, ZTE, Avaya, Mikrotik, Enterasys, Finisar, Dell Force10, Riverstone, Fortinet and more. - Passives Direct Attach Copper (DAC) Twinax cable for affordable, low-power, low-latency connections

• MSA compliant for compatibility with leading switch manufacturers such as Cisco, Intellinet Network Solutions, ZyXEL, TP-Link, Ubiquiti and more (see specifications)
• Two QSFP+ connector for data transfer rates up to 40 Gbit/s
• Significantly lower power consumption and price than fiber optic cables
• Lower signal latency than RJ45 connections
• Easier to use than cables in optical transceivers because fewer components need to match
• Passive DAC as an ideal option in structured cabling for short distance applications up to 7 m
• No heat generation, suitable for high ambient temperatures up to 70°C
• Hot swappable for network upgrades or replacement with seamless transition
• 3 year warranty Standards and certificates:
• RoHS
• CE
• FCC
General

• Power consumption: < W (per side)
• Applications: 40 Gigabit Ethernet
• Maximum data transfer rate: 40 Gbit/s
• Minimum bend radius: 33 mm
• Impedance: 100 Ohm
• Length: 0.5 m
• Weight: 101 g
Compatible brands

• Cisco , Intellinet Network Solutions, ZyXEL, TP-Link, Ubiquiti, D-Link, Edimax, Allnet, Allied Telesis, Digitus, KTI Networks, LevelOne, PLANET, Tenda, TRENDnet, ZTE, Avaya, Mikrotik, Enterasys, Finisar, Dell Force10, Riverstone, Fortinet and more
Connections:

• 2 x QSFP+ plug
cable

• AWG 30
• Type: copper, twinaxial
• Outer jacket material: PVC
Ambient conditions

• Ambient temperature during operation: 0 - 70°C
• Ambient temperature during storage: -40 - 80°C
Scope of delivery

• Passive DAC Twinax cable Color: Black Product dimensions: 0.5 (L) x 0.018 (W) x 0.012 (H) [m]