LENTION CB-C34 HDMI and Card-Reader Hub review

Data, cards and one screen without a charging-input role

The CB-C34 is useful when a supported USB-C computer needs three USB-A data connections, an HDMI display and both card formats available together. Its exact feature list and manufacturer photograph identify that focused layout. It can suit a laptop that handles its power through another appropriate connection rather than requiring charging through the hub.

The deciding limitation is the absence of a laptop PD-input route in the complete model map. Do not choose it for a one-port setup that must keep charging through this same accessory. That requirement changes the kind of hub you need.

Three USB-A sockets provide the familiar data connections

LENTION describes three USB-A peripherals using USB 3.0 capability up to 5 Gbps. That can suit a keyboard, mouse and another supported device. It is a different arrangement from a hub that splits its USB-A sockets between faster and slower USB generations.

The interface rating does not provide three independent full-speed connections back to the laptop. All attached devices share the computer route, including active card traffic. Consider the actual simultaneous workload, particularly when several storage devices are involved.

Choose between the documented HDMI timing levels

The exact source specifies up to 3840 by 2160 at 30 Hz, with 2560 by 1600 and lower resolutions supported at 60 Hz. These are separate display modes. A 4K 60 Hz requirement needs another documented arrangement rather than an assumption that every 4K adapter offers the same timing.

There is one HDMI output and no native USB-C monitor connection in this map. The computer must provide the appropriate USB-C video capability, and the actual cable and screen must support the chosen mode. A USB-C-shaped port alone does not establish those capabilities.

Both card formats can remain active

The CB-C34 description explicitly supports simultaneous SD and microSD reading and writing. It lists UHS-I capability up to 104 MB/s and identifies several supported card families. The useful feature is documented concurrency, rather than simply two visible slots.

For example, a workflow that needs both formats mounted can use that actual reader arrangement. The card-speed figure is an advertised interface ceiling, not a measurement for your media or files. The cards and other activity on the shared host link still affect the task.

Base-M1 support is explicitly named

The own model text specifically lists 2020 M1 MacBook Pro and Air examples, alongside earlier USB-C MacBooks and selected Surface and Chromebook devices. That provides a clearer source basis for the named base-M1 setup than inferring it from a year range or a general macOS label.

It does not establish every later Apple chip or a two-screen arrangement. The source also lists particular iPads, but those names alone are not used here to promise a general independent desktop across iPad software versions. The actual operating mode matters as much as the connector.

Plan the power route and connected footprint

The maker’s product photograph shows a tethered USB-C host lead. Leave room for the actual HDMI cable, USB plugs and card access, rather than judging the connected setup only by the aluminum body. The inspected source does not give a precise host lead length.

If the laptop needs power during use, plan its separate appropriate charging connection before selecting this hub. Power features in the comparison table belong to other models; the CB-C34 itself is the data, card and HDMI configuration described here.

The manufacturer also excludes Samsung DeX Station. Shortlist this hub for a documented host, three USB-A devices, concurrent card readers and one screen within the stated timing. Choose a different model when laptop pass-through charging, downstream USB-C data, Ethernet or multiple independent displays is essential.

LENTION’s exact CB-C34 feature list and original product photograph establish this configuration.