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PCIe Express to Thunderbolt 3/4 USB4 Dock, one PCIe 3.0 x16 Slot Input, Compatible with DeckLink Capture Card. Aluminum Alloy Housing Enclosure for Laptops/Desktops (MK-M1s)
Maskedfish

Maskedfish PCIe Express to Thunderbolt 3/4 USB4 Dock

Bottom line: The Maskedfish PCIe Express to Thunderbolt 3/4 USB4 Dock is a specs-and-price decision rather than a crowd-consensus one in the expansion cards category, priced around $209.00 on Amazon as of 2026-10-06. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

$209.00

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Buy on Amazon — $209.00 Compare to similar expansion cards

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Design & Cooling: All-aluminum chassis with passive cooling for silent operation.
  • ✓ Backed by Maskedfish's warranty and support channels

Cons

  • ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
  • ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

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SpecPicks Verdict

SpecPicks scored Maskedfish PCIe Express to Thunderbolt 3/4 USB4 Dock using a rating × review-volume × price-fit model applied to published specs and reviews across the expansion cards category. Maskedfish's expansion cards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for expansion cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • PCI Express Support: Provides PCIe 3.0 x16 slot for laptops/desktops with Thunderbolt 3/4 or USB4 capability.
  • High-Speed Bandwidth: Delivers up to 40Gbps bandwidth through Thunderbolt 3, supporting integration with video capture cards, high-speed fiber/ethernet connections, NVMe drives, FireWire cards, and more.
  • Power Supply: Includes a 12V 3A (36W) universal power adapter, with 36W power provided through the PCIe slot. Note: GPU cards are not supported.
  • Design & Cooling: All-aluminum chassis with passive cooling for silent operation.
  • Compatibility: Supports PCIe cards up to 163mmx28mmx115mm in size and is driverless, compatible with Windows, Linux, and macOS systems.

Full Specifications

BrandMaskedfish
Wattage36 watts
Model NameMK-M1s
Form FactorCustom/Unique
Model NumberMK-M1s
Power SupplyIncludes a 12V 3A (36W) universal power adapter, with 36W power provided through the PCIe slot. Note: GPU cards are not supported.
CompatibilitySupports PCIe cards up to 163mmx28mmx115mm in size and is driverless, compatible with Windows, Linux, and macOS systems.
Built-In MediaPCIe Express to Thunderbolt 3/4 USB4 Dock
Connector TypePCI Express
Cooling MethodAir
Output Wattage36 watts
Item Dimensions6.89 x 2.01 x 5.87 inches
Mfr Part NumberM1s
Number of Items1
Design & CoolingAll-aluminum chassis with passive cooling for silent operation.
Compatible DevicesLaptop, Desktop, Video Capture Card, High-Speed Fiber/Ethernet Connection, NVMe Drive, FireWire Card
PCI Express SupportProvides PCIe 3.0 x16 slot for laptops/desktops with Thunderbolt 3/4 or USB4 capability.
Warranty Description1 Year
Maximum Input Voltage12 volts_of_alternating_current
Minimum Input Voltage12 volts_of_direct_current
Full listing titlePCIe Express to Thunderbolt 3/4 USB4 Dock, one PCIe 3.0 x16 Slot Input, Compatible with DeckLink Capture Card. Aluminum Alloy Housing Enclosure for Laptops/Desktops (MK-M1s)

Ready to buy?

PCIe Express to Thunderbolt 3/4 USB4 Dock, one PCIe 3.0 x16 Slot Input, Compatible with DeckLink Capture Card. Aluminum Alloy Housing Enclosure for Laptops/Desktops (MK-M1s) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $209.00

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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PCIe Express to Thunderbolt 3/4 USB4 Dock, one PCIe 3.0 x16 Slot Input, Compatible with DeckLink Capture Card. Aluminum Alloy Housing Enclosure for Laptops/Desktops (MK-M1s)
$209.00
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