QSFP+/QSFP28 Loopback Modules

Amphenol is the leading provider of 40G QSFP+ Loopback Adapter Modules and 100G QSFP28 Loopback Adapter Modules worldwide, providing network administrators, IT professionals and OEM network equipment manufacturers with an affordable means of testing their 40-Gigabit Ethernet, 100-Gigabit Ethernet and QDR InfiniBand capable network hardware (switches, servers, HBA's, etc.) equipped with QSFP, QSFP+ and QSFP28 ports. Our QSFP+ and QSFP28 Loopbacks are fully self-contained, plug-and-play devices; offering universal compatibility with your QSFP+ and QSFP28 capable hardware. Enjoy the web's broadest possible selection of 40G/100G loopback transceivers with your choice of insertion loss (dB attenuation) and power consumption (Watts TDP) -- enabling network professionals the ability to properly mimic a range of QSFP+ and QSFP28 interconnect technologies such as Passive Copper Cables, Active Copper Cables and Optical Transceiver Modules.

100G QSFP Loopbacks (QSFP28)

QSFP/QSFP+ Loopback Modules

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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 [100-Gigabit Ethernet Ready]
(Based on 2 vote(s))
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.: 6
Availability: In stock

1-50	$44.91
51+	$42.66

Qty:
EA

Amphenol SF-100GLB0W00-3DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 3dB Attenuation & 0W Power Consumption [100-Gigabit Ethernet Ready]
(Based on 2 vote(s))
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	$46.80
51+	$44.46

Qty:
EA

Amphenol SF-100GLB0W00-5DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 5dB Attenuation & 0W Power Consumption [100-Gigabit Ethernet Ready]
(Based on 1 vote(s))
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	$46.80
51+	$44.46

Qty:
EA

Amphenol SF-100GLB0W00-6DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 6dB Attenuation & 0W Power Consumption [100-Gigabit Ethernet Ready]
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.: 38
Availability: In stock

1-50	$44.91
51+	$42.66

Qty:
EA

Amphenol SF-100GLB1.5W-0DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 0dB Attenuation & 1.5W Power Consumption [100-Gigabit Ethernet Ready]
(Based on 1 vote(s))
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.: 2
Availability: In stock

1-50	$44.91
51+	$42.66

Qty:
EA

Amphenol SF-100GLB1.5W-3DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 3dB Attenuation & 1.5W Power Consumption [100-Gigabit Ethernet Ready]
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.: 9
Availability: In stock

1-50	$46.80
51+	$44.46

Qty:
EA

Amphenol SF-100GLB1.5W-5DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 5dB Attenuation & 1.5W Power Consumption [100-Gigabit Ethernet Ready]
(Based on 1 vote(s))
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	$46.80
51+	$44.46

Qty:
EA

Amphenol SF-100GLB1.5W-6DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 6dB Attenuation & 1.5W Power Consumption [100-Gigabit Ethernet Ready]
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	$44.58
51+	$42.35

Qty:
EA

Amphenol SF-100GLB2.5W-0DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 0dB Attenuation & 2.5W Power Consumption [100-Gigabit Ethernet Ready]
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.: 0
Availability: Out of stock

1-50	$46.80
51+	$44.46

Qty:
EA

Amphenol SF-100GLB2.5W-3DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 3dB Attenuation & 2.5W Power Consumption [100-Gigabit Ethernet Ready]
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	$44.58
51+	$42.35

Qty:
EA

Amphenol SF-100GLB2.5W-5DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 5dB Attenuation & 2.5W Power Consumption [100-Gigabit Ethernet Ready]
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	$44.58
51+	$42.35

Qty:
EA

Amphenol SF-100GLB2.5W-6DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 6dB Attenuation & 2.5W Power Consumption [100-Gigabit Ethernet Ready]
(Based on 1 vote(s))
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	$44.58
51+	$42.35

Qty:
EA

Amphenol SF-100GLB3.5W-0DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 0dB Attenuation & 3.5W Power Consumption [100-Gigabit Ethernet Ready]
(Based on 2 vote(s))
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.: 210
Availability: In stock

1-50	$46.80
51+	$44.46

Qty:
EA

Amphenol SF-100GLB3.5W-3DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 3dB Attenuation & 3.5W Power Consumption [100-Gigabit Ethernet Ready]
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.: 323
Availability: In stock

1-50	$46.80
51+	$44.46

Qty:
EA

Amphenol SF-100GLB3.5W-5DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 5dB Attenuation & 3.5W Power Consumption [100-Gigabit Ethernet Ready]
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	$46.80
51+	$44.46

Qty:
EA

Amphenol SF-100GLB3.5W-6DB QSFP 100G Loopback Adapter Module for QSFP28 Port Testing - 6dB Attenuation & 3.5W Power Consumption [100-Gigabit Ethernet Ready]
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	$46.80
51+	$44.46

Qty:
EA

Amphenol SF-QSFPLOOPBK-001 QSFP+ 40G Loopback Adapter Module for QSFP / QSFP+ Port Testing - 0dB Attenuation & 1.5W Power Consumption [Copper+Optical Ready]
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.: 45
Availability: In stock

1-50	$24.47
51+	$23.25

Qty:
EA

Amphenol SF-QSFPLOOPBK-002 QSFP+ 40G Loopback Adapter Module for QSFP / QSFP+ Port Testing - 0dB Attenuation & 0W Power Consumption [Copper+Optical Ready]
(Based on 1 vote(s))
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.: 9
Availability: In stock

1-50	$24.47
51+	$23.25

Qty:
EA

Amphenol SF-QSFPLOOPBK-003 QSFP+ 40G Loopback Adapter Module for QSFP / QSFP+ Port Testing - 3dB Attenuation & 1.5W Power Consumption [Copper+Optical Ready]
(Based on 1 vote(s))
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.: 40
Availability: In stock