from $129
Daisy chain up to six compatible devices with the Dual-Port Thunderbolt 3 Expansion Card from QNAP . Designed for use in select QNAP devices, this expansion card installs into an available PCIe 3.0 x4 slot and provides two Thunderbolt 3 ports capable of transferring data at up to 40 Gb/s to streamline real-time 4K video editing, content sharing, collaborative workflows, and more. Devices include compatible NAS enclosures and Thunderbolt 3 10GbE adapters. A low-profile bracket is pre-installed on the expansion card and a full-size bracket included. Using an adapter allows you to connect Thunderbolt 2 devices to transfer data at up to 20 Gb/s.
Determine if you need a passive adapter (just changing the plug shape) or an active converter (translating a digital signal to analog, like HDMI to VGA). Active converters are strictly directional, meaning an HDMI-to-DisplayPort cable will not work backwards. Available from $129.
Adapters and converters have zero maintenance and no consumable parts. Active converters may draw a microscopic amount of power via USB or HDMI, but the cost is unmeasurable. They are simply replaced if lost or broken.
Common Failure Modes
Failures are entirely physical or heat-related. Connectors can bend or snap if torque is applied to the cable. Active converters (which contain chips) can overheat and fail if passing high-bandwidth signals for long periods.
Determine if you need a passive adapter (just changing the plug shape) or an active converter (translating a digital signal to analog, like HDMI to VGA). Active converters are strictly directional, meaning an HDMI-to-DisplayPort cable will not work backwards. Always check maximum supported resolution and refresh rate for video adapters.
Passive adapters last indefinitely unless physically broken. Active converters (with chips) may fail after several years.
The QNAP Dual-Port Thunderbolt 3 Expansion Card is available at bhphoto, cdw, starting at $129.
Adapters and converters have zero maintenance and no consumable parts. Active converters may draw a microscopic amount of power via USB or HDMI, but the cost is unmeasurable. They are simply replaced if lost or broken.
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