The Vi-Link 40G-DAC QSFP+ (Quad Small Form-factor Pluggable Plus) copper direct-attach cables are suitable for very short distances and offer a highly cost-effective way to establish a 40-Gigabit link between QSFP+ ports of QSFP+ switches within racks and across adjacent racks. These cables are used for 40GbE and InfiniBand standards, to maximize performance. QSFP+ is designed to meet emerging data center and high-performance computing application needs for a high-density cabling interconnect system capable of delivering an aggregate data bandwidth of 40Gb/s. This interconnect system is fully compliant with existing industry standard specifications such as the QSFP MSA and IBTA (InfiniBand Trade Association). The QSFP+ cables support the bandwidth transmission requirements as defined by IEEE 802.3ba (40 Gb/s) and InfiniBand QDR (4×10 Gb/s per channel) specifications.

Compliant QSFP MSA specifications
Fully compatible with IEEE802.3ba and InfiniBand QDR specifications
40 Gb/s total bandwidth
4 independent duplex channels operating at 10Gbps, also support for 2.5Gbps, 5Gbps data rates
100 ohm differential impedance system
Single 3.3V power supply, low power consumption, <1.5W
Low Near-End Crosstalk(NEXT)
Operating case temperature: -40 to 85°C
All-metal housing for superior EMI performance
Precision process control for minimization of pair-to-pair skew
AC coupling of PECL signals
EEPROM for cable signature & system communications
30 AWG to 24 AWG cable sizes available
RoHS compliant