40G QSFP+ to QSFP+ DAC QSFP-H40G-ACU1M 1m (3ft) 40G QSFP+ Active Direct Attach Cable, Cisco Compatible. QSFP-H40G-ACU2M 2m 40G QSFP+ Active Direct Attach Cable, Cisco Compatible. QSFP-H40G-ACU3M 3m (10ft) 40G QSFP+ Active Direct Attach Cable, Cisco Compatible. QSFP-H40G-ACU5M 5m (16ft) 40G QSFP+ Active Direct Attach Cable, Cisco Compatible. QSFP-H40G-ACU7M 7m (23ft) 40G QSFP+ Active Direct Attach Cable, Cisco Compatible. QSFP-H40G-ACU9M 9m (23ft) 40G QSFP+ Active Direct Attach Cable, Cisco Compatible. QSFP-H40G-CU1M 1m 40G QSFP+ Passive Direct Attach Cable, Cisco Compatible. QSFP-H40G-CU2M 2m 40G QSFP+ Passive Direct Attach Cable, Cisco Compatible. QSFP-H40G-CU3M 3m 40G QSFP+ Passive Direct Attach Cable, Cisco Compatible. QSFP-H40G-CU5M 5m 40G QSFP+ Passive Direct Attach Cable, Cisco Compatible. QSFP-H40G-CU7M 7m 40G QSFP+ Passive Direct Attach Cable, Cisco Compatible. QSFP-H40G-CU10M 10m 40G QSFP+ Passive Direct Attach Cable, Cisco Compatible.