Maskedfish
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)
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
SpecPicks Verdict
SpecPicks classifies PCIe Express to Thunderbolt 3/4 USB4 Dock, one PCIe 3.0 x16 Slot Inpu… as a category leader on buyer feedback in the expansion cards category, based on 4 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. Maskedfish's positioning sits comfortably above the category median. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
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 Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Highly rated — 4.7★ average across customer reviews
- ✓ Design & Cooling: All-aluminum chassis with passive cooling for silent operation.
- ✓ Backed by Maskedfish's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Limited review volume so far — fewer data points on long-term reliability
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
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
| Brand | Maskedfish |
|---|---|
| Wattage | 36 watts |
| Model Name | MK-M1s |
| Form Factor | Custom/Unique |
| Model Number | MK-M1s |
| Power Supply | Includes a 12V 3A (36W) universal power adapter, with 36W power provided through the PCIe slot. Note: GPU cards are not supported. |
| Compatibility | Supports PCIe cards up to 163mmx28mmx115mm in size and is driverless, compatible with Windows, Linux, and macOS systems. |
| Built-In Media | PCIe Express to Thunderbolt 3/4 USB4 Dock |
| Connector Type | PCI Express |
| Cooling Method | Air |
| Output Wattage | 36 Watts |
| Item Dimensions | 6.89 x 2.01 x 5.87 inches |
| Mfr Part Number | M1s |
| Design & Cooling | All-aluminum chassis with passive cooling for silent operation. |
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 available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
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