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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

  • ColorSilver
  • Operating SystemWindows 10 Pro
  • CPU TypeIntel Celeron
  • Number of CoresDual-core Processor
  • Screen Size14.0"
  • TouchscreenNon-Touch Screen
  • 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.

Highlights

  • 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

Specifications

BrandHP
SeriesThin Client
ModelMT21
ColorSilver
Operating SystemWindows 10 Pro
CPU TypeIntel Celeron
Number of CoresDual-core Processor
Screen Size14.0"
TouchscreenNon-Touch Screen
Wide Screen SupportYes
Display TypeHD
Resolution1366 x 768
GPU/VPUIntel HD Graphics 610
Graphic TypeIntegrated Card
SSD256GB
HDDNo
Storage Spec256GB NVMe SSD
Memory16GB
Memory SpeedDDR4 2400
Memory Spec8 GB x 2
Memory Slot (Total)2
Memory Slot (Available)0
Max Memory Supported32 GB
LAN10/100/1000Mbps
WLANWi-Fi 5 (802.11ac)
BluetoothBluetooth 4.0
USB2x USB 3.1 Gen 1, 1x USB-C 3.1 Gen 1
Video Port1x HDMI, 1x VGA, 1x DisplayPort via USB-C
HDMI1 x HDMI
Audio Ports1 x Headphone/Microphone Combo Jack
AudioIntegrated Sound card
SpeakerIntegrated Stereo Speakers
TouchpadYes
KeyboardStandard
Backlit KeyboardNon-backlit
WebcamYes
Card Reader3-in-1
TypeMainstream
AC Adapter/Charger45-watt AC Adapter
Battery3-cell Lithium Ion
Battery Life> 5 hours
Dimensions (W x D x H)9.4" x 13.2" x 0.8"
Weight3 - 3.9 lbs.

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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