CharJenPro MacBar E CJ0705 MacBook USB-C Hub review

CharJenPro MacBar E CJ0705: a MacBook side adapter that adds wired networking

The MacBar E is aimed at a particular combination: a compatible MacBook, a wired network, one HDMI screen and a small set of USB accessories. Its Gigabit Ethernet socket is the deciding difference from the regular MacBar. If Wi-Fi is inconvenient at the desk, that socket can remove the need for a separate network dongle. The tradeoff is the fitted design: two fixed USB-C host plugs need the correct adjacent MacBook ports and enough clearance beside the computer.

CJ0705 is the Ethernet-equipped MacBar E

CharJenPro's original product page identifies the space-gray variant as CJ0705SG in its SKU and manufacturer-part data. That gives the earlier CJ0705 lead a specific family identity. The maker calls it MacBar E and lists Gigabit Ethernet in addition to HDMI, two USB-A sockets, SD, microSD and a multifunction USB-C connection. A short retailer title mentioning MacBook or iPad is not enough to make this dual-plug body a universal tablet or laptop adapter.

The actual product and gallery must match the computer you intend to use. The manufacturer lists MacBook Air models from 2018 through named 2020/2021 M1 references and MacBook Pro models from 2016 through named 2020/2021 M1 references. We retain Intel and explicitly named base-M1 scope. Later chips and Pro, Max or Ultra processor variants need their own confirmation. Check the socket pair and any laptop case before attaching the hub; the model-year wording cannot substitute for matching the chassis.

Use the network rating as a link ceiling

The Ethernet connection is specified for 10, 100 and 1000Mbps links. That is a Gigabit maximum at the socket, not a measured Internet speed. The network switch, cable, service and other traffic still affect what an application receives. It is a practical option for connecting the MacBook to a desk's wired network while retaining peripheral connections, but it does not meet a requirement for 2.5GbE or a faster network interface.

The two USB-A sockets accept legacy USB 3.0 devices. The original text lists examples such as drives, cameras and printers; a peripheral may still have its own software needs. The hub page does not provide enough to promise universal driver-free operation, and its numeric USB-A line rate is left unspecified in our matcher. A port count can still be useful without turning an interface name into a performance benchmark.

Check the USB-C layout before allocating accessories

The manufacturer's original seven-in-two diagram shows one outward multifunction USB-C socket. Its current text also mentions a secondary data-only socket, but that extra connection does not appear in the same original layout. Do not choose an unseen second USB-C data position as an essential. Confirm the actual unit's layout before purchase; this review qualifies the common connections and keeps the charging socket unavailable for a data plug when a charger occupies it.

The original diagram identifies the multifunction connection as Thunderbolt 3, while the text advertises video up to 5K at 60Hz and a 40Gbps transfer headline. That larger headline does not establish a 20Gbps ordinary USB mode for a drive. Its ordinary USB rate therefore remains unspecified. A requirement for USB-C data while charging cannot be satisfied from these conflicting descriptions, and we do not silently substitute the regular MacBar's clearer two-socket diagram.

One HDMI screen is the supported desktop arrangement

The HDMI output advertises up to 4K at 30Hz. One screen at that mode is established. The separate USB-C video claim does not provide a simultaneous independent-desktop table for HDMI plus USB-C, and it does not override the limits of the exact Mac. The MacBar E therefore does not qualify for a strict two-external-screen requirement here. A 4K60 HDMI screen is also beyond the documented HDMI ceiling.

Charging through the multifunction USB-C socket is supported, but the original diagram states up to 87W while current text says up to 100W. The net ceiling for the exact supplied edition needs confirmation, so no numeric wattage qualifies here. A suitable separate PD source and cable are needed; an included wall charger is not established. Both card sizes have physical slots, but their simultaneous transfer behavior is not expressly confirmed. Choose the MacBar E when its fitted shape, Gigabit network, single 4K30 HDMI connection and carefully checked USB-C allocation match the desk. Choose a different documented arrangement when faster networking, multiple independent displays or a more flexible host cable is essential.