HP t638 QuickSpecs
QuickSpecs
HP t638 Thin Client
Overview
c06527271 — 16636— Asia-Pacific — Version 2 — January 14, 2021
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HP t638 Thin Client
FRONT
BACK
1.
Power button
1.
(4) USB-A 2.0 Type A port
2.
Power On indicator
2.
(2) Serial port with configurable power
3.
(1) USB-A 3.1 Gen 1 Type A port
3.
(1)19.5 V DC power input
4.
(1) USB-A 2.0 Type A port
4.
(1) Cable lock slot
5.
3.5 mm combo headset/audio jack
5.
(1) PS2 Combo Keyboard/Mouse
6.
System stand
6.
(1) Mini-DP Dual Serial Port
7.
Access panel to information labels and VESA 100
mounting holes
7.
(1) VGA analog video output
8.
(1) HDMI digital video output
9.
(1) Parallel port
10.
(1) RJ45 GbE network connector
11.
(1) System stand
QuickSpecs
HP t638 Thin Client
Overview
c06527271 — 16636— Asia-Pacific — Version 2 — January 14, 2021
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AT A GLANCE
• Intel® Celeron® Processor J4125; 2.0 – 2.7 GHz; 4 cores
2
• DDR4 dual-channel SDRAM system memory; up to 2400 MT/s transfer rate; two SODIMM slots
• Embedded Multi Media Card 16 / 32/ 64 GB
• 1 x HDMI 1.4b supporting up to 3840 x 2160 @ 30 Hz resolutions, 1x VGA video outputs supporting up to 1920 x 1200 @
60 Hz resolutions
• Solid-state flash memory storage; M.2 form factor modules
• Gigabit Ethernet (GbE) network connection
• Fast Ethernet (100 Mb/s) or Gigabit (1,000 Mb/s)
• Optional Intel® Wi-Fi® AX200 Wi-Fi 6/Bluetooth® 5 adapter
4
including antennas integrated internally in the chassis
• Option Port with a selection of available factory options (see detailed listing later in this document)
• Integrated PC speaker for basic audio playback; 3.5 mm combo headset/audio port on front
• 45W non-PFC external power adapter
• TCG certified TPM version 2.0 (firmware)
3
; other security features include a system UEFI designed to address NIST SP
800-147 guidelines, cable lock slot
• Passive thermal design (no cooling fans) and active thermal management technology that monitors the system operating
temperatures, throttles SOC operation if appropriate and prevents unit thermal shutdown.
• Rated for a maximum ambient operating temperature of 40 degree C
• ENERGY STAR® certified and EPEAT® 2019 Silver registered in the United States (except for some models configured with
Fiber Optic NIC networking options)5.
• Post-consumer recycled plastics content greater than 25% total unit plastics (by weight)
• Low halogen
1
material content
• All models TAA compliant in North America
1
This product is low halogen except for power cords, cables and peripherals, service parts obtained aftermarket may not be low halogen
2
Multicore is designed to improve performance of certain software products. Not all customers or software applications will necessarily
benefit from use of this technology. Performance and clock frequency will vary depending on application workload and your hardware and
software configurations. Intel’s numbering, branding and/or naming is not a measurement of higher performance.
3
In some cases, machines pre-configured with Windows OS might ship with TPM turned off
4
Wireless features, performance and support may vary depending on environmental variables such placement, settings and firmware of your
access points. Please contact your wireless vendor for support of your wireless environment
5
Based on US EPEAT® registration according to IEEE 1680.1-2018 EPEAT®. Status varies by country. Visit http://www.epeat.net for more
information.
Warranty
HP Customer Support: limited three-year hardware limited warranty in most regions; HP Care Packs are extended service
contracts that go beyond your standard limited warranties; for more details visit http://www.hp.com/go/cpc
QuickSpecs
HP t638 Thin Client
Technical Specifications
c06527271 — 16636— Asia-Pacific — Version 2 — January 14, 2021
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OPERATING SYSTEMS
• HP ThinPro, including HP Smart Zero Core
• Windows 10 IoT Enterprise LTSC 2019
PROCESSOR
Model
CPU Frequency
Max/Base
Cores
GPU Type
GPU Frequency
Intel® Celeron® Processor
J4125
2.7/2.0 GHz
4
Intel UHD Graphic 600
250 MHz
GRAPHICS
Number of displays supported:
2
Video outputs:
Standard:
(1) VGA analog output
(1) HDMI digital output
Max. screen resolution:
3840 x 2160 @ 30 Hz (With HDMI Output)
NOTE:
HP recommends dual channel memory (two SODIMMs) configurations for optimal display resolution performance
MEMORY
Type:
DDR4 dual channel SDRAM
Data Transfer Rate:
Up to 2,400 MT/s
Peak Transfer Rate:
Up to 19,200 MB/s
Number of Slots
2 x SODIMM
Capacities:
4, 8 GB
NOTES:
• The system’s Graphics Processing Unit (GPU) uses part of the total system memory. System memory dedicated to graphics
performance is not available for use by other programs
• HP recommends dual channel memory (two SODIMMs) configurations for optimal system performance
QuickSpecs
HP t638 Thin Client
Technical Specifications
c06527271 — 16636— Asia-Pacific — Version 2 — January 14, 2021
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UEFI
UEFI Specification Revision
2.3.1
TPM 2.0 (firmware)
Meets requirements for Common Criteria, an independent third-party certification of
trustworthiness
Meets requirements for FIPS 140-2, a standard for cryptographic integrity
Security features
System UEFI designed to address NIST SP 800-147 guidelines
STORAGE
Type:
NAND flash memory; non-volatile
Number of Sockets:
1 x M.2
Capacities:
16 GB M.2 eMMC flash module
32 GB M.2 eMMC flash module
64 GB M.2 eMMC flash module
128 GB M.2 SATA flash module
Input/Output
USB:
Front access:
(1) USB-A 3.1 Gen 1 port
(1) USB-A 2.0 port Type A port
Rear access:
(4) USB-A 2.0 Type A port
Video Outputs:
Standard:
(1) VGA analog output
(1) HDMI digital output
I/O Interfaces:
Standard:
(1) RJ45 network connector
(1) 3.5 mm combo headset/audio jack (front)
(2) serial port with configurable power
(2) serial ports enabled with an included cable adapter
(1) parallel port
Option Port:
The rear I/O panel includes an Option Port that can be configured with one of the following factory
options:
• 1 Mini-DP Dual serial port enabled with an included cable adapter
• Combo PS/2 port with an included cable adapter
AUDIO/VIDEO
Audio Subsystem
• Internal amplified speaker system for basic audio playback
• 3.5 mm combo headset/headphone/analog MIC in (front access)
Audio CODECs
• MP3
• AAC Stereo
• HE AAC
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