Cisco QSFP-4SFP25G-CU Compatible 100G QSFP28 4 x 25G NRZ to 4 x 25G SFP28 NRZ Passive Copper Breakout Cable

Use this DAC cable where a 100G link is required between compatible QSFP28 to SFP28 ports. This HT version corresponds to Cisco QSFP-4SFP25G-CU and covers 0.5m (2ft), 1m (3ft), 1.5m (5ft), 2m (7ft), 2.5m (8ft), 3m (10ft), 3.5m (11ft) and 5m (16ft); electrical or optical construction follows the DAC specification rather than a detachable transceiver-and-patch-cord arrangement.

Series Part Number: QSFP-4SFP25G-CUHT Part Number: QSFP-4SFP25G-CU

Product Highlights

• HT-manufactured compatible alternative for Cisco QSFP-4SFP25G-CU
• 100G aggregate connectivity at 100Gbps
• Interface configuration: QSFP28 to SFP28
• Passive Twinax / Copper
• Length configurations covered: 0.5m (2ft), 1m (3ft), 1.5m (5ft), 2m (7ft), 2.5m (8ft), 3m (10ft), 3.5m (11ft) and 5m (16ft)
• Conductor specification: 30AWG
• Power consumption: ≤0.125W
• Operating temperature: 0 to 70°C (32 to 158°F)

• QSFP-4SFP25G-CU50CM
• QSFP-4SFP25G-CU1M
• QSFP-4SFP25G-CU1-5M
• QSFP-4SFP25G-CU2M
• QSFP-4SFP25G-CU2-5M
• QSFP-4SFP25G-CU3M
• QSFP-4SFP25G-CU3-5M
• QSFP-4SFP25G-CU5M

Passive DAC assemblies are normally used for short switch-to-switch, switch-to-server and rack-adjacent links. They draw very little power and avoid separate optical components, but the selected length must remain within the host and cable specification.

The QSFP28 to SFP28 interface and 100G data rate must match the equipment at both ends. The source application is listed as 100G to 4x 25G Ethernet, Data Centers. For breakout versions, confirm the lane mapping and the speed of every downstream port; matching connector shapes alone does not establish interoperability.

The assembly is configured for equipment that recognizes the QSFP-4SFP25G-CU series. Before shipment, we check connector identification, link establishment and electrical link stability, signal integrity and diagnostic readouts. Host hardware and firmware revisions can affect third-party cable acceptance, so customers can provide the switch, server or accelerator model and software release for a pre-order compatibility review.

When ordering, specify QSFP-4SFP25G-CU, the host platform and one of the covered configurations: 0.5m (2ft). If your purchase documentation uses any of the listed OEM part numbers, include that identifier as well so our team can verify the intended version before production.

Every DAC assembly undergoes continuity and link testing, compatibility verification and a visual inspection of both connector ends. Cables are coiled without exceeding their minimum bend radius, fitted with connector protection and packed in anti-static bags or protective trays 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.