j5create JCD372S USB-C Multi-Adapter review

j5create JCD372S review: a small Surface-oriented HDMI and card adapter without PD charging

The JCD372S focuses on a useful portable combination: two USB-A data sockets, an HDMI output and SD/microSD card access. j5create positions it for Surface Pro 8, with a right-angle USB-C plug that follows the side of the device more closely than a straight connector. It is not a dedicated Surface magnetic dock and does not provide a laptop-charging inlet.

That last limitation is central to the decision. The manufacturer explicitly lists bus power and no Power Delivery. If your computer must charge through the same hub while you use a screen and accessories, choose another design. If you have a separate charging route, the JCD372S avoids carrying a larger adapter merely for functions you do not need.

The Surface name describes the intended fit, not a different computer protocol

The host connection is USB-C. Video requires the computer’s USB-C port to support DisplayPort Alternate Mode. The manufacturer also lists Windows, macOS and Chrome OS, so the product is not documented solely as a proprietary Surface connection. The exact computer’s port capability remains more important than the operating-system family name.

The 90-degree connector can reduce the direction in which the cable projects from a tablet or laptop. It does not prove clearance around every protective case, neighboring socket or later Surface model. Check that the physical plug can seat fully in your particular arrangement. A short cable is not a reason to let the adapter hang under strain from several attached cables.

The cable is listed at 200 mm, approximately 7.87 inches. The manufacturer gives a 112 by 29.5 by 10 mm body and 48 g weight. Those figures help judge portability, but they are specifications rather than measurements from our own handling.

One 4K30 screen is the documented video arrangement

The exact product features and resolution table state 3840 by 2160 at 30 Hz. A separate “maximum refresh rate” field says 60 Hz without tying that figure to 4K. It should not be combined with the maximum resolution to invent 4K60. Choose the JCD372S for its documented one-screen 4K30 route, not for an unproven higher-refresh 4K mode.

This is one HDMI connector and one independent external display. There is no second video output and no downstream USB-C monitor socket. A suitable HDMI cable and display are required, and the computer must actually generate native video over its USB-C port. A data-only USB-C connection cannot acquire that capability through the adapter.

The manufacturer states that no driver installation is required for the documented adapter functions. That makes it easier to consider for a machine where installing display software is undesirable, while still respecting the host’s native video limit. It is not a USB graphics workaround for a computer that lacks the required video output.

Two USB-A data connections, with a host-speed fallback

Both USB-A sockets are specified as USB 3.2 Gen 2, with an advertised data rate up to 10 Gbps. This can suit a suitable external SSD enclosure alongside another accessory. It does not promise that both sockets independently sustain that rate through the shared host connection.

j5create explicitly documents operation with USB 3.2 Gen 1 or USB 3.0 hosts, but limits the available transfer rate to 5 Gbps in that arrangement. A fast peripheral cannot make an older host link faster. When comparing hubs for storage, check the computer’s actual USB mode as well as the adapter’s port label.

There is no downstream USB-C data socket. If your peripheral cable ends in USB-C at the hub, this layout does not accept it directly. Also distinguish data rate from charging: the page’s awkward reference to charging “speeds” in Gbps is not a power rating, and the explicit no-PD specification remains the controlling computer-charging information.

Card access without a separate reader

The manufacturer documents SD and microSD UHS-I access, with a stated interface figure up to 104 MB/s and support for external memory up to 2 TB. Those are reader specifications, not a promise about the speed of every card or the time to import a particular photo library.

The reviewed material does not establish simultaneous independent access to both card formats. If reading two cards at once is essential, choose a product whose instructions expressly support it rather than assuming that two openings are enough. For an occasional card import, the integrated reader may still remove a separate accessory from your bag.

Who should choose it?

Choose the JCD372S for a documented compatible USB-C computer needing one 4K30 HDMI screen, two USB-A data sockets and card access, with another charging route already available. Its right-angle plug and small body are practical reasons to consider it for a Surface Pro 8 arrangement.

Choose another model for Ethernet, USB-C peripherals, 4K60, multiple independent screens or PD charging through the hub. The useful setup is compact and specific; the Surface-oriented design does not remove those functional limits.

Sources

j5create JCD372S product description and complete specification; exact system and hardware specification page.