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QSFP-DD Interconnect System & Cable Assemblies

Molex QSFP-DD (Double Density) Interconnect System and Cable Assemblies feature an eight-lane electrical interface that transmits up to 28Gbps NRZ or 56Gbps PAM-4, up to 200Gbps or 400Gbps aggregate. QSFP-DD offers the same footprint as QSFP interconnects, making them backward compatible. The double density feature is an extended paddle card with two rows of high-speed context. Molex QSFP-DD meets IEEE 802.3bj, InfiniBand EDR, and SAS 3.0 specifications, allowing these connectors and cable assemblies to function across a variety of next-generation technologies and applications. The series includes sheet metal (stainless steel) EMI cages with increased robustness and cable assemblies in lengths ranging from 500mm to 2.5m.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) Filter the results in the table by unit price based on your quantity.	Qty.
I/O Connectors QSFP-DD Cage ASSY 1x6 SAN Fin HS SF 203372-1347 Molex 1: S/223.12 884In Stock	Mfr. Part # 203372-1347 Mouser Part # 538-203372-1347	Molex	I/O Connectors QSFP-DD Cage ASSY 1x6 SAN Fin HS SF Learn More about Molex qsfp dd interconnect system	Datasheet	884In Stock	S/223.12 S/189.64 S/180.61 S/174.58 View S/165.00 Quote	Min.: 1 Mult.: 1
I/O Connectors QSFP-DD Cage ASSY 1x5 SAN Fin HS SF 203371-1347 Molex 1: S/195.83 1,030In Stock	Mfr. Part # 203371-1347 Mouser Part # 538-203371-1347	Molex	I/O Connectors QSFP-DD Cage ASSY 1x5 SAN Fin HS SF Learn More about Molex qsfp dd interconnect system	Datasheet	1,030In Stock	S/195.83 S/166.44 S/158.23 S/153.13 View S/147.99 S/139.90 Quote	Min.: 1 Mult.: 1
I/O Connectors QSFP-DD Cage ASSY 1x6 OT SF 203372-1253 Molex 1: S/144.33 991In Stock	Mfr. Part # 203372-1253 Mouser Part # 538-203372-1253	Molex	I/O Connectors QSFP-DD Cage ASSY 1x6 OT SF Learn More about Molex qsfp dd interconnect system	Datasheet	991In Stock	S/144.33 S/122.65 S/114.95 S/109.85 View S/106.19 S/100.31 Quote	Min.: 1 Mult.: 1
Ethernet Cables / Networking Cables DDQ to DDQ 28 AWG 2.0 +/- .08 201591-3020 Molex 1: S/1,254.51 149In Stock	Mfr. Part # 201591-3020 Mouser Part # 538-201591-3020	Molex	Ethernet Cables / Networking Cables DDQ to DDQ 28 AWG 2.0 +/- .08 Learn More about Molex qsfp dd interconnect system	Datasheet	149In Stock	S/1,254.51 S/1,207.76 S/1,142.68	Min.: 1 Mult.: 1
I/O Connectors CUSTOM 204058-8113 Molex 1: S/365.51 45In Stock	Mfr. Part # 204058-8113 Mouser Part # 538-204058-8113	Molex	I/O Connectors CUSTOM	Datasheet	45In Stock	S/365.51 S/310.70 S/278.20 S/264.88 S/258.81	Min.: 1 Mult.: 1
Ethernet Cables / Networking Cables DDQ to DDQ 28 AWG 1.0 +/- .05 201591-3010 Molex 1: S/1,366.00 122In Stock	Mfr. Part # 201591-3010 Mouser Part # 538-201591-3010	Molex	Ethernet Cables / Networking Cables DDQ to DDQ 28 AWG 1.0 +/- .05 Learn More about Molex qsfp dd interconnect system	Datasheet	122In Stock	S/1,366.00 S/1,172.15 S/1,105.74	Min.: 1 Mult.: 1
Ethernet Cables / Networking Cables DDQ to DDQ 28 AWG 1.5 +/- .08 201591-3015 Molex 1: S/1,486.00 161In Stock	Mfr. Part # 201591-3015 Mouser Part # 538-201591-3015	Molex	Ethernet Cables / Networking Cables DDQ to DDQ 28 AWG 1.5 +/- .08 Learn More about Molex qsfp dd interconnect system	Datasheet	161In Stock	S/1,486.00 S/1,220.61 S/1,220.57	Min.: 1 Mult.: 1
I/O Connectors QSFP-DD Cage ASSY 1x3 SAN Fin HS SF 203369-1347 Molex 1: S/129.04 669In Stock	Mfr. Part # 203369-1347 Mouser Part # 538-203369-1347	Molex	I/O Connectors QSFP-DD Cage ASSY 1x3 SAN Fin HS SF Learn More about Molex qsfp dd interconnect system	Datasheet	669In Stock	S/129.04 S/109.65 S/102.80 S/98.17 View S/94.90 S/89.64 S/87.08	Min.: 1 Mult.: 1
I/O Connectors QSFP-DD Cage ASSY 1x3 OT SF 203369-1253 Molex 1: S/86.10 1,001In Stock Factory Special Order	Mfr. Part # 203369-1253 Mouser Part # 538-203369-1253 Factory Special Order	Molex	I/O Connectors QSFP-DD Cage ASSY 1x3 OT SF Learn More about Molex qsfp dd interconnect system	Datasheet	1,001In Stock	S/86.10 S/73.18 S/68.59 S/65.28 View S/62.16 S/58.27 S/55.70 Quote	Min.: 1 Mult.: 1
Ethernet Cables / Networking Cables DDQ to DDQ 30 AWG .5 +/- .05 201591-1005 Molex 1: S/1,168.61 14In Stock	Mfr. Part # 201591-1005 Mouser Part # 538-201591-1005	Molex	Ethernet Cables / Networking Cables DDQ to DDQ 30 AWG .5 +/- .05 Learn More about Molex qsfp dd interconnect system	Datasheet	14In Stock	S/1,168.61 S/1,146.22 S/977.13	Min.: 1 Mult.: 1
Ethernet Cables / Networking Cables DDQ to DDQ 28 AWG 2.5 +/- .08 201591-3025 Molex 1: S/1,921.03 6In Stock	Mfr. Part # 201591-3025 Mouser Part # 538-201591-3025	Molex	Ethernet Cables / Networking Cables DDQ to DDQ 28 AWG 2.5 +/- .08 Learn More about Molex qsfp dd interconnect system	Datasheet	6In Stock	S/1,921.03	Min.: 1 Mult.: 1
I/O Connectors QSFP-DD 1x1 SF OT 0RL NET FIN HS 203143-1351 Molex 1: S/102.65 284In Stock 1,536Expected 11/26/2026	Mfr. Part # 203143-1351 Mouser Part # 538-203143-1351	Molex	I/O Connectors QSFP-DD 1x1 SF OT 0RL NET FIN HS Learn More about Molex qsfp dd interconnect system	Datasheet	284In Stock 1,536Expected 11/26/2026	S/102.65 S/87.23 S/81.78 S/77.89 View S/74.15 S/69.52 S/66.41 Quote	Min.: 1 Mult.: 1
Ethernet Cables / Networking Cables DDQ to DDQ 30 AWG 1.5 +/- .08 201591-1015 Molex 1: S/1,613.29 6In Stock	Mfr. Part # 201591-1015 Mouser Part # 538-201591-1015	Molex	Ethernet Cables / Networking Cables DDQ to DDQ 30 AWG 1.5 +/- .08 Learn More about Molex qsfp dd interconnect system	Datasheet	6In Stock	S/1,613.29 S/1,313.10 S/1,313.06	Min.: 1 Mult.: 1
I/O Connectors QSFP-DD Cage ASSY 1x4 OT SF 203370-1253 Molex 1: S/103.00 193In Stock Factory Special Order	Mfr. Part # 203370-1253 Mouser Part # 538-203370-1253 Factory Special Order	Molex	I/O Connectors QSFP-DD Cage ASSY 1x4 OT SF Learn More about Molex qsfp dd interconnect system	Datasheet	193In Stock	S/103.00 S/87.50 S/86.96 View S/69.05 S/65.74	Min.: 1 Mult.: 1
Ethernet Cables / Networking Cables QSFP-DD/QSFP-DD PASSV CBL 30AWG 1m 201591-1010 Molex 1: S/1,066.39 Non-Stocked	Mfr. Part # 201591-1010 Mouser Part # 538-201591-1010	Molex	Ethernet Cables / Networking Cables QSFP-DD/QSFP-DD PASSV CBL 30AWG 1m Learn More about Molex qsfp dd interconnect system	Datasheet	Non-Stocked	S/1,066.39 S/863.40 S/834.90 View Quote	Min.: 1 Mult.: 1
Ethernet Cables / Networking Cables DDQ to DDQ 3.0 /- .08 26 AWG 201591-3030 Molex 90: S/945.37 Non-Stocked	Mfr. Part # 201591-3030 Mouser Part # 538-201591-3030	Molex	Ethernet Cables / Networking Cables DDQ to DDQ 3.0 /- .08 26 AWG	Datasheet	Non-Stocked	S/945.37 View Quote	Min.: 90 Mult.: 30
I/O Connectors QSFP DD 1x1 SF Assy CT 0RL W/O HK 203143-3243 Molex 5,184: S/23.39 Non-Stocked	Mfr. Part # 203143-3243 Mouser Part # 538-203143-3243	Molex	I/O Connectors QSFP DD 1x1 SF Assy CT 0RL W/O HK	Datasheet	Non-Stocked	S/23.39	Min.: 5,184 Mult.: 576
I/O Connectors QSFP DD 1x1 SF Assy OT 0RL W/O HK 203143-3254 Molex 5,184: S/32.62 Non-Stocked	Mfr. Part # 203143-3254 Mouser Part # 538-203143-3254	Molex	I/O Connectors QSFP DD 1x1 SF Assy OT 0RL W/O HK	Datasheet	Non-Stocked	S/32.62	Min.: 5,184 Mult.: 576
I/O Connectors QSFP DD 1x1 SF Assy OT 0RL SAN FIN HS 203143-3350 Molex 5,280: S/40.68 Non-Stocked	Mfr. Part # 203143-3350 Mouser Part # 538-203143-3350	Molex	I/O Connectors QSFP DD 1x1 SF Assy OT 0RL SAN FIN HS	Datasheet	Non-Stocked	S/40.68	Min.: 5,280 Mult.: 480
I/O Connectors QSFP DD 1x1 SF Assy OT 0RL NET FIN HS 203143-3351 Molex 1,152: S/39.08 Non-Stocked	Mfr. Part # 203143-3351 Mouser Part # 538-203143-3351	Molex	I/O Connectors QSFP DD 1x1 SF Assy OT 0RL NET FIN HS	Datasheet	Non-Stocked	S/39.08 Quote Quote	Min.: 1,152 Mult.: 384
I/O Connectors QSFP DD 1x1 SF Assy OT 2RL NET FIN HS 203143-3357 Molex 1,152: S/35.07 Non-Stocked	Mfr. Part # 203143-3357 Mouser Part # 538-203143-3357	Molex	I/O Connectors QSFP DD 1x1 SF Assy OT 2RL NET FIN HS	Datasheet	Non-Stocked	S/35.07 Quote Quote	Min.: 1,152 Mult.: 384
I/O Connectors I/O Connectors QSFP DD 1X2 SF ASSY OT 1RL W/O H 203152-3254 Molex 1,008: S/21.49 Non-Stocked	Mfr. Part # 203152-3254 Mouser Part # 538-203152-3254	Molex	I/O Connectors I/O Connectors QSFP DD 1X2 SF ASSY OT 1RL W/O H	Datasheet	Non-Stocked	S/21.49	Min.: 1,008 Mult.: 336
I/O Connectors QSFP DD 1x3 SF Assy CT 0RL w/o HK 203369-3243 Molex 1,152: S/36.90 Non-Stocked	Mfr. Part # 203369-3243 Mouser Part # 538-203369-3243	Molex	I/O Connectors QSFP DD 1x3 SF Assy CT 0RL w/o HK	Datasheet	Non-Stocked	S/36.90	Min.: 1,152 Mult.: 288
I/O Connectors QSFP DD 1x3 SF Assy CT 1RL w/o HK 203369-3244 Molex 1,152: S/39.31 Non-Stocked	Mfr. Part # 203369-3244 Mouser Part # 538-203369-3244	Molex	I/O Connectors QSFP DD 1x3 SF Assy CT 1RL w/o HK	Datasheet	Non-Stocked	S/39.31 Quote Quote	Min.: 1,152 Mult.: 288
I/O Connectors QSFP DD 1x3 SF Assy OT 0RL W/O HK 203369-3253 Molex 1,152: S/35.77 Non-Stocked	Mfr. Part # 203369-3253 Mouser Part # 538-203369-3253	Molex	I/O Connectors QSFP DD 1x3 SF Assy OT 0RL W/O HK	Datasheet	Non-Stocked	S/35.77	Min.: 1,152 Mult.: 288