Who needs a second screen?

Field workers with USB-C laptops

If you compare a spreadsheet with source material away from a desk, a USB-C connection may keep setup simple. Check that the work laptop can send video through its port before choosing a monitor around that connection.

Reference-heavy spreadsheet reviewers

Long codes, dense columns or repeated reference rows may make resolution, vertical screen space or portrait positioning more important to you than touch controls.

Mixed-device travellers

If you switch between an older laptop and other equipment during a trip, check the available video inputs and any driver or separate-power requirements before relying on one monitor.

What matters when choosing?

Start with the laptop connection and power arrangement, then assess the screen in the light and workspace where you will check references. Carrying and input options matter most when they change how you will set up during the trip.

ConcernWhat to checkWho this matters to
Laptop connection and power Confirm the laptop’s video-capable output and the monitor’s power requirements for the intended connection. If my work laptop cannot send video through its USB-C port, a tidy one-cable plan will not help me check references. Around 31% of consumers put connection and power compatibility first.
Spreadsheet readability Compare resolution, aspect ratio, anti-glare treatment and claimed brightness for the expected lighting. When I need to distinguish small values in a bright location, seeing the references clearly matters more to me than extra controls. Readability is the primary concern for around 31% of consumers.
Carrying and setup Check weight and the stand or case arrangement against the surfaces you expect to use. Moving between short stops, I want a screen I can carry and position without an awkward setup. Around 25% of consumers prioritise carrying and setup.
Touch and extra inputs Check whether touch works with your device and whether an alternative video input needs additional power or cables. If I annotate material or change devices, those controls and connections may matter more than a simpler display. Touch or input flexibility comes first for around 13% of consumers.

Mistakes to avoid

  • Assuming every USB-C port carries video

    A laptop port used for charging or data does not necessarily provide the video output a USB-C monitor needs. VESA describes DisplayPort Alt Mode as a way for USB-C to carry display video.

    Check the laptop maker’s port specification and, where possible, test the intended laptop and cable before travelling.

    An incompatible connection may require a different adapter, dock or power arrangement.

  • Relying on a brightness figure in direct sun

    HP’s portable-monitor guide suggests at least 300 nits as a starting point for outdoor use. A claimed brightness figure alone does not guarantee that small spreadsheet text will be readable in direct sunlight.

    Compare the stated brightness and screen finish, and plan for shade or a different screen angle where reflections are likely.

  • Treating USB-A fallback as plug-and-play

    ASUS says USB-A operation on the ZenScreen MB16ACE requires a DisplayLink driver; that requirement matters on a managed work laptop.

    Check whether your device permits the driver, then install and test it before departure if you intend to use that connection.

    Driver installation may also take time or require help from your organisation’s IT team.

  • Choosing touch before defining the task

    Touch interaction may be useful for annotation or navigation, but checking spreadsheet values does not by itself establish a need for it.

    Decide whether you will only compare rows or also interact directly with material on the second screen; then weigh touch against your lighting and connection needs.

Brands to consider for portable monitors

Dell

Dell’s Pro 14 Plus P1425 is a 14-inch, non-touch option for checking references where a compact screen and brighter claimed specification matter.

  • Dell lists a 1920 × 1200, 16:10 display, 400 cd/m² claimed brightness, an anti-glare finish and a tilt stand.
  • Its specification does not establish direct-sun readability or compatibility with every USB-C laptop.

Lenovo

Lenovo’s ThinkVision M14t Gen 2 is a 14-inch touch option for reviewers who want more pixels for dense references.

  • Lenovo lists a 2240 × 1400, 16:10 display, 10-point touch, a 700 g weight and an adjustable stand.
  • Touch adds little to a workflow that only compares values; confirm the laptop connection before choosing this model.

ASUS

ASUS’s ZenScreen MB16ACE is a 15.6-inch option to consider when a USB-A connection may be needed alongside USB-C.

  • ASUS lists a 0.71 kg weight and a folding case that serves as a stand.
  • Its USB-A connection requires a DisplayLink driver. ASUS says automatic orientation through DisplayWidget works only with Windows.

ViewSonic

ViewSonic’s TD1655 combines touch with USB-C and mini-HDMI inputs for a mixed-device setup.

  • ViewSonic lists 10-point touch, two USB-C ports, mini-HDMI and a foldable stand.
  • Its claimed 250 cd/m² brightness is below the 300-nit starting point in HP’s outdoor-use buying guidance; assess the light where you will work.

Joybuy portable monitors

These portable screens offer different ways to check spreadsheet references while travelling, from a higher-resolution display to compact touch and USB-C options. Match the exact connection and power setup to your laptop before choosing.

UPERFECT 16-inch 2K portable monitor

UPERFECT 16-inch 2K 144Hz portable monitor

Consider this screen if detailed spreadsheet references and bright-location use are priorities, while checking how its size will fit your travel setup.

The product name lists a 2560 × 1600, 16:10 screen, a claimed 450-nit brightness rating, Mini HDMI and Type-C inputs. That brightness rating does not guarantee readability in direct sun; confirm the required video and power connections, weight and stand arrangement for your trip.

View on Joybuy
ASUS ZenScreen MB166CR FHD portable monitor

ASUS ZenScreen MB166CR FHD

This FHD model is worth considering for a laptop-based second screen if its connection and the lighting at your field location suit your setup.

Confirm the laptop’s video output, available power and the screen’s brightness before relying on it for a brightly lit stop.

View on Joybuy
ASUS ZenScreen MB166C 15.6-inch portable monitor

ASUS ZenScreen MB166C 15.6-inch Full HD

This model suits a traveller seeking a conventional second screen for reference checks, provided the USB-C connection works with the intended laptop.

Its product name specifies an IPS panel, USB Type-C and an anti-glare surface. Check the laptop’s video and power arrangements, and assess brightness for the places where you expect to work.

View on Joybuy
ASUS ZenScreen Go MB16AHP FHD portable monitor

ASUS ZenScreen Go MB16AHP FHD

Consider this FHD screen if you need a travel second display and are comparing connection options for more than one device.

Before depending on a non-USB-C connection, confirm the inputs, required cables and power source for the exact arrangement. Check the claimed brightness against your field lighting.

View on Joybuy
UPERFECT 14-inch 60Hz touchscreen portable monitor

UPERFECT 14-inch 60Hz touchscreen monitor

This smaller touch option is relevant if direct interaction with references would help your workflow and you want to assess a 14-inch screen for carrying.

The product name specifies a 180° adjustable stand and VESA compatibility. Confirm touch compatibility, brightness, carry weight and the video and power requirements of your laptop before travelling.

View on Joybuy

Common questions

Is a USB-C port enough to connect a portable monitor with one cable?

No: the laptop must support the video output required by the monitor, and the power arrangement must also work. VESA explains that DisplayPort Alt Mode can carry display video over USB-C; check the laptop maker’s specification for the particular port and test your intended cable setup if possible.

What brightness should I look for when checking spreadsheets outdoors?

HP’s portable-monitor guide suggests at least 300 nits as a starting point for outdoor use. It is not a promise of readability in direct sunlight, so consider reflections, screen angle and whether you can work in shade.

Can I use a portable monitor with a USB-A laptop?

Some models offer a USB-A route, but it depends on the monitor and its software requirements. ASUS says the ZenScreen MB16ACE requires a DisplayLink driver for its USB-A connection; check whether you can install that driver on your work laptop before the trip.

How should I dispose of an old portable monitor in the UK?

Use an appropriate electrical-item collection or recycling route rather than treating the monitor as ordinary rubbish. GOV.UK advises checking local council services and recycling facilities; it also describes retailer take-back when you buy a new electrical item with the same function.