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Silver HP Thin Client MT21 14 inch laptop closed view

HP

HP Thin Client MT21 laptop 14" Intel Celeron 3865U 1.80GHz 16GB DDR4 256GB NVMe Windows 10 Pro

SKU CH-KYMC-K74PW MPN MT21

A 14-inch thin-client notebook with an Intel Celeron 3865U processor, 16GB DDR4 memory and a 256GB NVMe SSD, running Windows 10 Pro

  • Screen size14.0 in (35.6 cm)
  • ProcessorIntel Celeron
  • Graphics processorIntel HD Graphics 610
  • Memory size16 GB
  • SSD storage256 GB
  • Display resolution1366 × 768
  • 14" HD display for clear viewing in tight spaces
  • Intel Celeron 3865U 1.80GHz dual-core handles routine workloads
  • 16GB DDR4 2400 memory keeps multiple sessions responsive
  • 256GB NVMe SSD provides fast boot and app loading
  • Windows 10 Pro with LAN, Wi-Fi and Bluetooth for managed deployments

Thin-client notebook for managed environments

The HP MT21 is a 14-inch thin client running Windows 10 Pro on a dual-core Intel Celeron 3865U at 1.80GHz. It carries 16GB of DDR4 2400 memory in an 8 GB x 2 configuration and a 256GB NVMe SSD. The HD panel shows 1366 x 768 resolution and a 720p webcam is integrated.

Fanless thermal profile and low power draw

The Celeron 3865U operates without a fan, so the chassis stays silent during typical office workloads. Integrated Intel HD Graphics 610 handles the display output while keeping overall power consumption modest for a device of this class.

Video outputs and legacy ports included

HDMI, VGA and DisplayPort via USB-C give three external display options without adapters. A built-in card reader, LAN, Wi-Fi and Bluetooth cover common peripheral and network needs for kiosk, point-of-sale or virtual-desktop deployments.

How it compares

Measured against everything we stock in Standard Laptops & Notebooks, at today’s prices. Recalculated every night.

Price $523.99
Cheaper than about 57% of the 32,549 comparable items (median $599.99).
Screen size 14.0 in (35.6 cm)
Lower than about 60% of the 32,085 comparable items (median 15.2 in).
Memory size 16 GB
Typical for this category: the median of 30,127 items is 16 GB.

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Specifications

Product
Brand nameHP
Product lineThin Client
Model nameMT21
Product colorSilver
Product typeMainstream
Processor
ProcessorIntel Celeron
CPU coresDual-core Processor
Memory
Memory size16 GB
RAM type and speedDDR4 2400
Memory configuration8 GB x 2
Total memory slots2
Free memory slots0
Maximum supported memory32 GB
Storage
SSD storage256 GB
Hard driveNo
Storage configuration256 GB NVMe SSD
Display
Screen size14.0 in (35.6 cm)
Display resolution1366 × 768
Touch inputNon-Touch Screen
Widescreen compatibleYes
Display formatHD
Graphics
Graphics processorIntel HD Graphics 610
Graphics typeIntegrated Card
Audio & video
SoundIntegrated Sound card
SpeakersIntegrated Stereo Speakers
Web cameraYes
Connectivity
LAN connection10/100/1000 Mbit/s
Wi-FiWi-Fi 5 (802.11ac)
Bluetooth support4.0
Ports & slots
USB ports2x USB 3.1 Gen 1, 1x USB-C 3.1 Gen 1
Video outputs1x HDMI, 1x VGA, 1x DisplayPort via USB-C
HDMI ports1 x HDMI
Audio jacks1 x Headphone/Microphone Combo Jack
Memory card reader3-in-1
Power
Battery runtime> 5 h
Power adapter45-watt AC Adapter
Battery pack3-cell Lithium Ion
Size & build
Overall dimensions9.4 in × 13.2 in × 0.8 in
Product weight3–3.9 lb (1.36–1.77 kg)
Software
Operating systemWindows 10 Pro
More details
Pointing deviceYes
KeyboardStandard
Keyboard backlightNon-backlit

Questions about this item

How is the 256GB NVMe drive installed in the MT21, and which step do people miss?

The drive slots into the internal M.2 connector; the step most people miss is re-seating the retaining screw before refitting the bottom cover.

What maintenance or replacement will the 16GB DDR4 2400 memory need later?

The memory is soldered, so no module replacement is possible; only keep the vents clear of dust to avoid thermal throttling.

What limit appears first on the Celeron 3865U 1.80GHz under sustained load?

The dual-core processor hits its thermal ceiling first, causing clock-speed reduction before any other component saturates.

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