Cisco QSFP-H40G-CU50CM Compatible 40G QSFP+ Passive Copper Cable, 0.5m (2ft)

The QSFP-H40G-CU50CM cable offers a direct QSFP+ to QSFP+ connection at 40Gbps. Its 0.5m (2ft) length and DAC construction are intended for Cisco equipment, with no separate transceiver-and-patch-cord assembly required.

OEM Part Number: QSFP-H40G-CU50CMHT Part Number: QSFP-H40G-CU50CM

Product Highlights

• Compatible alternative to Cisco QSFP-H40G-CU50CM
• 40G connectivity at 40Gbps
• Interface configuration: QSFP+ to QSFP+
• Fixed length and part number: 0.5m (2ft), QSFP-H40G-CU50CM
• Conductor specification: 30AWG
• Minimum bend radius: 35mm

This assembly uses 30AWG conductors, PVC (OFNR) jacket, minimum bend radius 35mm. These mechanical characteristics affect how the cable should be dressed behind the equipment. Avoid sharp edges, excessive ties and repeated tight bends close to the connector boots.

A passive DAC has no separate optical conversion stage. Its low-power, low-latency operation is useful for short equipment links, but the assembly must remain within the length and signaling mode accepted by both hosts.

The 0.5m (2ft) length is suited to closely aligned ports where excessive slack would obstruct airflow or complicate dressing. Measure the actual port-to-port path before choosing QSFP-H40G-CU50CM; even a short assembly must retain the specified bend radius and should never be pulled tight behind the equipment.

QSFP-H40G-CU50CM is the shortest of 7 verified length options in this family. It is the preferred choice when the port positions are close and cable slack must be kept to a minimum. The next option is QSFP-H40G-CU1M at 1m (3ft), adding 0.5m for a less direct routing path; selecting it unnecessarily would leave more cable to dress.

The intended application is determined by the host interface and protocol support. Listed interface and protocol references include SFF-8436, QSFP+ MSA and IEEE 802.3ba. Confirm that the host firmware and port configuration support the same operating mode.

The HT cable carries the compatibility configuration associated with QSFP-H40G-CU50CM, while its mechanical assembly remains the fixed 0.5m (2ft) version described here. Incoming inspection, connector examination and a live link test are completed before packing. Customers with unusually old or new Cisco software can request a pre-order check.

When ordering, specify QSFP-H40G-CU50CM, cable length 0.5m (2ft) and the host platform. This allows our team to verify both the physical assembly and the compatibility requirement before production. Neutral labeling and customer packing lists can be arranged for volume orders.

Every QSFP-H40G-CU50CM compatible assembly undergoes link testing, compatibility verification and visual inspection. The 0.5m (2ft) cable is coiled without exceeding its minimum bend radius, fitted with connector protection and packed in an anti-static bag or protective tray before cartoning. Project labels and packing lists are available for volume orders.

Standard configurations normally ship within one to three working days. Worldwide courier, air freight and sea freight options are available, and shipments can also be sent on your own courier account or delivered to an appointed forwarder.