• Overview
  • Tech Specs
  • Accessories

Secure Connections
for 1-meter Thunderbolt 3 (40Gbps)
Active Cables

Thunderbolt 3 connectors are held in place by friction—which usually works fine in setups where your gear remains protected from disturbance while operating. But, if there’s a chance of movement nearby, it’s possible the Thunderbolt cable can be accidentally disconnected, leading to the loss of a file or an entire project. Sonnet’s ThunderLok 3L Thunderbolt connector retainer clip was designed to solve this problem by preventing accidental 1-meter Thunderbolt 3 (40Gbps) active cable disconnections from many of Sonnet’s Thunderbolt 3 products.

To use it, simply slip it over the cable connector of a 1-meter Thunderbolt 3 (40Gpbs) active cable, and then plug in the connector and secure it to the product by turning a thumbscrew. Because ThunderLok 3 doesn’t attach to the connector, it stays on the cable and won’t get lost when not in use.

Key Features

Prevents Accidental Cable Disconnection—When used with ThunderLok 3L-compatible products, secures a 1-meter Thunderbolt 3 (40Gbps) active cable from accidentally being unplugged

Easy to Install and Use—Slides over of a Thunderbolt 3 (40Gbps) cable connector, and then secures it to the device by turning a thumbscrew

Won't Get Lost—Doesn’t attach to Thunderbolt connector, but remains on cable even when disconnected

ThunderLok 3L

ThunderLok 3L Connected to Thunderbolt 3 Cable

Benefit from a Secure Connection

Sonnet's ThunderLok 3L easily fastens to a 1-meter Thunderbolt 3 (40Gbps) active cable to ensure a secure connection to compatible Sonnet Thunderbolt 3 products. The retainer clips remains on the cable and won't get lost.

ThunderLok 3L Connected Over Thunderbolt 3 Cable


Part No.  
TB3-LOK2L ThunderLok 3L Thunderbolt Connector Retainer Clip (2-Pack)
Warranty 2-year
Package Contents Two Sonnet ThunderLok 3L Thunderbolt Connector Retainer Clips


Specifications subject to change without notice.

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Product Compatibility

Echo Express III-D (Thunderbolt 3 Edition)

Echo Express III-R (Thunderbolt 3 Edition)

Echo Express SEL (Thunderbolt 3 Edition)

Echo Express SE I (Thunderbolt 3 Edition)

Echo Express SE III

Twin 10G (Thunderbolt 3 Edition)

Twin 10G SFP+ (Thunderbolt 3 Edition)

RoHS Compliant Logo

Accessories Part No. Description
Thunderbolt 3 Cable Thunderbolt 3 (40 Gbps) Cable TCB-TB3-1M 1-meter Thunderbolt 3 (40Gbps) cable