QSFP+/QSFP28 Loopback Modules

Amphenol’s Leading Portfolio of 40G QSFP+ Loopback Adapter Modules and 100G QSFP28 Loopback Adapter Modules are Available Factory Direct at Cables on Demand with over 20 Configurations In Stock. Our QSFP+ / QSFP28 Loopbacks are self-contained, plug-and-play devices; offering compatibility with QSFP+/QSFP28 ports on any brand of network switch, server or host bus adapter (HBA). Enjoy your choice of insertion loss (dB attenuation) and power consumption (Watts TDP) module characteristics.

QSFP/QSFP+ Loopback Modules (40G)

QSFP28 Loopback Modules (100G)

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25-Gigabit (25G) Ethernet • 40-Gigabit (40G) Ethernet Network Cables & Modules

50-Gigabit (50G) Ethernet • 100-Gigabit (100G) Ethernet Network Cables & Modules

QSFP+/QSFP28 Loopback Modules

Color

Length

Availability

Amphenol SF-100GLB0W00-0DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 0dB Attenuation & 0W Power Consumption [Amphenol OEM P / N: 647080002]
Code: SF-100GLB0W00-0DB
Genuine Amphenol 100G QSFP loopback adapter modules provide the ideal 100-Gigabit Ethernet rated port testing solution for QSFP28 enabled ports (28.0 Gbps x 4 channels). This low-profile passive QSFP 100G loopback cable features typical insertion loss (attenuation) characteristics of a mere 0dB; consuming no more than 0.0 Watts …
Qty avail.: 150
Availability: In stock

1-50	$49.73
51+	$47.24

Qty:
EA

Amphenol SF-100GLB0W00-3DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 3dB Attenuation & 0W Power Consumption [Amphenol OEM P / N: 647080010]
Code: SF-100GLB0W00-3DB
Genuine Amphenol 100G QSFP loopback adapter modules provide the ideal 100-Gigabit Ethernet rated port testing solution for QSFP28 enabled ports (28.0 Gbps x 4 channels). This low-profile passive QSFP 100G loopback cable features typical insertion loss (attenuation) characteristics of a mere 3dB; consuming no more than 0.0 Watts …
Qty avail.: 0
Availability: Out of stock

1-50	$51.83
51+	$49.24

Qty:
EA

Amphenol SF-100GLB0W00-5DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 5dB Attenuation & 0W Power Consumption [Amphenol OEM P / N: 647080011]]
Code: SF-100GLB0W00-5DB
Genuine Amphenol 100G QSFP loopback adapter modules provide the ideal 100-Gigabit Ethernet rated port testing solution for QSFP28 enabled ports (28.0 Gbps x 4 channels). This low-profile passive QSFP 100G loopback cable features typical insertion loss (attenuation) characteristics of approximately 5dB; consuming no more than 0.0 Watts of …
Qty avail.: 7
Availability: In stock

1-50	$51.83
51+	$49.24

Qty:
EA

Amphenol SF-100GLB0W00-6DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 6dB Attenuation & 0W Power Consumption [Amphenol OEM P / N: 647080012]
Code: SF-100GLB0W00-6DB
Genuine Amphenol 100G QSFP loopback adapter modules provide the ideal 100-Gigabit Ethernet rated port testing solution for QSFP28 enabled ports (28.0 Gbps x 4 channels). This low-profile passive QSFP 100G loopback cable features typical insertion loss (attenuation) characteristics of approximately 6dB; consuming no more than 0.0 Watts of …
Qty avail.: 36
Availability: In stock

1-50	$49.73
51+	$47.24

Qty:
EA

Amphenol SF-100GLB1.5W-0DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 0dB Attenuation & 1.5W Power Consumption [Amphenol OEM P / N: 647080001]
Code: SF-100GLB1.5W-0DB
Genuine Amphenol 100G QSFP loopback adapter modules provide the ideal 100-Gigabit Ethernet rated port testing solution for QSFP28 enabled ports (28.0 Gbps x 4 channels). This low-profile passive QSFP 100G loopback cable features typical insertion loss (attenuation) characteristics of a mere 0dB; consuming no more than 1.5 Watts …
Qty avail.: 43
Availability: In stock

1-50	$49.73
51+	$47.24

Qty:
EA

Amphenol SF-100GLB1.5W-3DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 3dB Attenuation & 1.5W Power Consumption [Amphenol OEM P / N: 647080004]
Code: SF-100GLB1.5W-3DB
Genuine Amphenol 100G QSFP loopback adapter modules provide the ideal 100-Gigabit Ethernet rated port testing solution for QSFP28 enabled ports (28.0 Gbps x 4 channels). This low-profile passive QSFP 100G loopback cable features typical insertion loss (attenuation) characteristics of approximately 3dB; consuming no more than 1.5 Watts of …
Qty avail.: 8
Availability: In stock

1-50	$51.83
51+	$49.24

Qty:
EA

Amphenol SF-100GLB1.5W-5DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 5dB Attenuation & 1.5W Power Consumption [Amphenol OEM P / N: 647080006]
Code: SF-100GLB1.5W-5DB
Genuine Amphenol 100G QSFP loopback adapter modules provide the ideal 100-Gigabit Ethernet rated port testing solution for QSFP28 enabled ports (28.0 Gbps x 4 channels). This low-profile passive QSFP 100G loopback cable features typical insertion loss (attenuation) characteristics of approximately 5dB; consuming no more than 1.5 Watts of …
Qty avail.: 8
Availability: In stock

1-50	$51.83
51+	$49.24

Qty:
EA

Amphenol SF-100GLB1.5W-6DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 6dB Attenuation & 1.5W Power Consumption [Amphenol OEM P / N: 647080008]
Code: SF-100GLB1.5W-6DB
Genuine Amphenol 100G QSFP loopback adapter modules provide the ideal 100-Gigabit Ethernet rated port testing solution for QSFP28 enabled ports (28.0 Gbps x 4 channels). This low-profile passive QSFP 100G loopback cable features typical insertion loss (attenuation) characteristics of approximately 6dB; consuming no more than 1.5 Watts of …
Qty avail.: 42
Availability: In stock

1-50	$49.47
51+	$47.00

Qty:
EA

Amphenol SF-100GLB2.5W-0DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 0dB Attenuation & 2.5W Power Consumption [Amphenol OEM P / N: 647080003]
Code: SF-100GLB2.5W-0DB
Genuine Amphenol 100G QSFP loopback adapter modules provide the ideal 100-Gigabit Ethernet rated port testing solution for QSFP28 enabled ports (28.0 Gbps x 4 channels). This low-profile passive QSFP 100G loopback cable features typical insertion loss (attenuation) characteristics of approximately 0dB; consuming no more than 2.5 Watts of …
Qty avail.: 50
Availability: In stock

1-50	$51.74
51+	$49.15

Qty:
EA

Amphenol SF-100GLB2.5W-3DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 3dB Attenuation & 2.5W Power Consumption [Amphenol OEM P / N: 647080005]
Code: SF-100GLB2.5W-3DB
Genuine Amphenol 100G QSFP loopback adapter modules provide the ideal 100-Gigabit Ethernet rated port testing solution for QSFP28 enabled ports (28.0 Gbps x 4 channels). This low-profile passive QSFP 100G loopback cable features typical insertion loss (attenuation) characteristics of approximately 3dB; consuming no more than 2.5 Watts of …
Qty avail.: 48
Availability: In stock

1-50	$49.47
51+	$47.00

Qty:
EA

Amphenol SF-100GLB2.5W-5DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 5dB Attenuation & 2.5W Power Consumption [Amphenol OEM P / N: 647080007]
Code: SF-100GLB2.5W-5DB
Genuine Amphenol 100G QSFP loopback adapter modules provide the ideal 100-Gigabit Ethernet rated port testing solution for QSFP28 enabled ports (28.0 Gbps x 4 channels). This low-profile passive QSFP 100G loopback cable features typical insertion loss (attenuation) characteristics of approximately 5dB; consuming no more than 2.5 Watts of …
Qty avail.: 97
Availability: In stock

1-50	$49.47
51+	$47.00

Qty:
EA

Amphenol SF-100GLB2.5W-6DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 6dB Attenuation & 2.5W Power Consumption [Amphenol OEM P / N: 647080009]
Code: SF-100GLB2.5W-6DB
Genuine Amphenol 100G QSFP loopback adapter modules provide the ideal 100-Gigabit Ethernet rated port testing solution for QSFP28 enabled ports (28.0 Gbps x 4 channels). This low-profile passive QSFP 100G loopback cable features typical insertion loss (attenuation) characteristics of approximately 6dB; consuming no more than 2.5 Watts of …
Qty avail.: 0
Availability: Out of stock

1-50	$49.47
51+	$47.00

Qty:
EA

Amphenol SF-100GLB3.5W-0DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 0dB Attenuation & 3.5W Power Consumption [Amphenol OEM P / N: 647080013]
Code: SF-100GLB3.5W-0DB
Genuine Amphenol 100G QSFP loopback adapter modules provide the ideal 100-Gigabit Ethernet rated port testing solution for QSFP28 enabled ports (28.0 Gbps x 4 channels). This low-profile passive QSFP 100G loopback cable features typical insertion loss (attenuation) characteristics of approximately 0dB; consuming no more than 3.5 Watts of …
Qty avail.: 43
Availability: In stock

1-50	$51.74
51+	$49.15

Qty:
EA

Amphenol SF-100GLB3.5W-3DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 3dB Attenuation & 3.5W Power Consumption [Amphenol OEM P / N: 647080014]
Code: SF-100GLB3.5W-3DB
Genuine Amphenol 100G QSFP loopback adapter modules provide the ideal 100-Gigabit Ethernet rated port testing solution for QSFP28 enabled ports (28.0 Gbps x 4 channels). This low-profile passive QSFP 100G loopback cable features typical insertion loss (attenuation) characteristics of approximately 3dB; consuming no more than 3.5 Watts of …
Qty avail.: 100
Availability: In stock

1-50	$51.18
51+	$48.62

Qty:
EA

Amphenol SF-100GLB3.5W-5DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 5dB Attenuation & 3.5W Power Consumption [Amphenol OEM P / N: 647080015]
Code: SF-100GLB3.5W-5DB
Genuine Amphenol 100G QSFP loopback adapter modules provide the ideal 100-Gigabit Ethernet rated port testing solution for QSFP28 enabled ports (28.0 Gbps x 4 channels). This low-profile passive QSFP 100G loopback cable features typical insertion loss (attenuation) characteristics of approximately 5dB; consuming no more than 3.5 Watts of …
Qty avail.: 8
Availability: In stock

1-50	$51.83
51+	$49.24

Qty:
EA

Amphenol SF-100GLB3.5W-6DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 6dB Attenuation & 3.5W Power Consumption [Amphenol OEM P / N: 647080016]
Code: SF-100GLB3.5W-6DB
Genuine Amphenol 100G QSFP loopback adapter modules provide the ideal 100-Gigabit Ethernet rated port testing solution for QSFP28 enabled ports (28.0 Gbps x 4 channels). This low-profile passive QSFP 100G loopback cable features typical insertion loss (attenuation) characteristics of approximately 6dB; consuming no more than 3.5 Watts of …
Qty avail.: 0
Availability: Out of stock

1-50	$51.83
51+	$49.24

Qty:
EA

Amphenol SF-QSFPLOOPBK-001 QSFP+ 40G Loopback Adapter Module for QSFP / QSFP+ Port Testing - 0dB Attenuation & 1.5W Power Consumption (40-Gigabit Ethernet)
Code: SF-QSFPLOOPBK-001
Genuine Amphenol QSFP+ loopback adapter modules provide the ideal 40-Gigabit rated port testing solution for both QSFP and QSFP+ enabled ports. This low-profile active QSFP+ loopback cable features typical insertion loss (attenuation) characteristics of a mere 0dB; consuming no more than 1.5 Watts of power in the process. Compatible …
Qty avail.: 0
Availability: Out of stock

1-50	$27.39
51+	$26.02

Qty:
EA

Amphenol SF-QSFPLOOPBK-002 QSFP+ 40G Loopback Adapter Module for QSFP / QSFP+ Port Testing - 0dB Attenuation & 0W Power Consumption (40-Gigabit Ethernet)
Code: SF-QSFPLOOPBK-002
Genuine Amphenol QSFP+ loopback adapter modules provide the ideal 40-Gigabit rated port testing solution for both QSFP and QSFP+ enabled ports. This low-profile passive QSFP+ loopback cable features typical insertion loss (attenuation) characteristics of a mere 0dB; consuming no more than 0.0 Watts of power in the process. Compatible …
Qty avail.: 65
Availability: In stock

1-50	$27.39
51+	$26.02

Qty:
EA

Amphenol SF-QSFPLOOPBK-003 QSFP+ 40G Loopback Adapter Module for QSFP / QSFP+ Port Testing - 3dB Attenuation & 1.5W Power Consumption (40-Gigabit Ethernet)
Code: SF-QSFPLOOPBK-003
Genuine Amphenol QSFP+ loopback adapter modules provide the ideal 40-Gigabit rated port testing solution for both QSFP and QSFP+ enabled ports. This low-profile active QSFP+ loopback cable features typical insertion loss (attenuation) characteristics of approximately 3dB; consuming no more than 1.5 Watts of power in the process. Compatible with …
Qty avail.: 25
Availability: In stock