QSFP-H40G-CU4M — QSFP+ 40 Gbps

The QSFP-H40G-CU4M is a passive Cisco DAC cable in QSFP+ form factor, offering 40 Gbps over 4 metres of pre-terminated twinax. Among the 40G QSFP+ DAC cables in the range, this 4 m version stands out by its ability to span two to three standard rack units, whereas the 0.5 m and 2 m variants are confined to a single rack. Operating temperature: 0 to 70 °C.

The QSFP-H40G-CU4M is recommended for End-of-Row (EoR) or Middle-of-Row (MoR) environments where the aggregation switch is physically a few metres away from the servers. Data centre network teams will find it a cost-effective means of deploying 40G without investing in optical transceivers. Genuine Cisco hardware, manufacturer warranty.