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What Is a Thin Client?
A thin client is a compact, low-power computer that runs applications and desktops hosted on a central server or in the cloud instead of processing and storing most data locally. The thin client handles the display, keyboard, mouse, and network connection, while the heavy computing happens elsewhere.
Because data stays in the data center or cloud, thin clients are easier to secure, update, and replace than traditional desktop PCs. This page explains how thin clients work, how they connect to virtual desktops and cloud services, and when they make sense for an organization. For an overview of all business computer types, see what a business computer is.
Thin client essentials at a glance
A small endpoint device that connects to desktops and apps running on a server or in the cloud
Stores little or no user data locally, which reduces the risk of data loss if a device is lost or stolen
Managed centrally by IT, so updates and settings apply to many devices at once
Typically uses less power and has fewer moving parts than a full desktop PC
Requires a reliable network connection to access virtual desktops and applications
How Do Thin Clients Work?
A thin client works by connecting over a network to a desktop or application that runs on a remote server or cloud platform. The server does the processing and stores the data, then streams the screen image to the thin client. The thin client sends keyboard, mouse, and other input back to the server.
The basic connection
The user signs in on the thin client.
The thin client connects to a server, virtual desktop, or cloud service using a remote display protocol.
The server runs the desktop and apps, including processing, memory, and storage.
The display is streamed to the thin client, and user input is sent back to the server in real time.
Remote display protocols
A remote display protocol controls how screen images, audio, and input travel between the server and the thin client. Common protocols include Microsoft Remote Desktop Protocol (RDP), Citrix HDX, and Omnissa Horizon (formerly VMware Horizon). HP Anyware is designed for graphics-intensive remote work. The protocol a thin client uses depends on the organization's virtualization platform.
Thin client operating systems
Thin clients run lightweight operating systems designed to connect to remote desktops securely. HP thin clients are available with HP ThinPro, Windows 11 IoT Enterprise, or IGEL OS, depending on the model [HP]. These operating systems include fewer local applications than a standard PC, which reduces the attack surface and simplifies management. Learn more about operating systems.
Virtual Desktops and Cloud Computing Explained
Thin clients rely on virtual desktops and cloud computing to deliver a full computing experience without local processing power. A virtual desktop is a desktop environment that runs on a remote server and is displayed on the user's device.
Delivery model | What it is | Where it runs | Example platforms |
|---|---|---|---|
Virtual desktop infrastructure (VDI) | Each user gets a dedicated or pooled virtual desktop hosted in the organization's own data center | On-premises servers | Citrix, Omnissa Horizon |
Desktop as a Service | Virtual desktops hosted and managed by a cloud provider, usually for a monthly fee | Public cloud | Azure Virtual Desktop, Windows 365 |
Session-based remote desktops | Multiple users share one server operating system, each in their own session | On-premises or cloud servers | Microsoft Remote Desktop Services |
Cloud and web apps | Individual applications delivered through a browser or app instead of a full desktop | Cloud | Software as a Service (SaaS) apps |
VDI vs. Desktop as a Service
VDI gives IT full control over servers, data, and configuration, but requires investment in data center hardware and expertise. Desktop as a Service shifts that infrastructure to a cloud provider, which can make it faster to scale and easier to manage, with ongoing subscription costs. Desktop as a Service is different from Device as a Service, a subscription model for physical devices and support, even though both are sometimes abbreviated as DaaS.
How cloud computing fits in
Cloud computing delivers computing resources, such as servers, storage, and applications, over the internet. Thin clients are a natural fit for cloud-first organizations because nearly all their work already happens in cloud desktops and apps. Learn more about cloud software.
Thin Client vs. Desktop PC vs. Zero Client
The main difference between these devices is where the computing happens. A desktop PC processes and stores everything locally, a thin client relies mostly on a server but runs a small local operating system, and a zero client has almost no local operating system at all.
Feature | Thin client | Desktop PC | Zero client |
|---|---|---|---|
Where apps run | Remote server or cloud | Locally | Remote server |
Local operating system | Lightweight, locked-down OS | Full operating system | Minimal firmware only |
Local storage | Small; little or no user data | Large; stores apps and files | None for user data |
Works offline | Limited | Yes | No |
Flexibility | Supports several protocols and some local apps, such as a browser | Runs any compatible software | Usually tied to one protocol or platform |
Management | Centralized | Per device or with management tools | Centralized |
Best for | Most VDI and cloud desktop deployments | Offline work and demanding local apps | Highly standardized, single-platform environments |
For stationary office PCs that run apps locally, see business desktops.
Benefits and Limitations of Thin Clients
Thin clients offer strong security and simple management, but they depend on network connectivity and back-end infrastructure.
Benefits
Data security: User data stays in the data center or cloud, so a lost or stolen device exposes little information.
Centralized management: IT updates desktops, apps, and policies in one place instead of on each device.
Fast replacement: If a thin client fails, a replacement can be connected and ready quickly because the user's desktop lives on the server.
Lower power use: Thin clients typically consume less electricity than full desktop PCs.
Long service life: With fewer local components and less local processing, thin clients can remain useful for many years.
Small footprint: Compact designs mount behind monitors or under desks.
Limitations
Network dependence: A slow or interrupted connection affects performance, and most work stops without access to the server.
Infrastructure costs: VDI requires servers, licenses, and IT expertise; Desktop as a Service adds subscription costs.
Graphics-intensive work: Video editing, 3D design, and similar tasks need high-performance servers or GPU-accelerated virtual desktops to run well.
Peripheral compatibility: Some specialized devices may need extra configuration to work through a virtual desktop.
Where Are Thin Clients Used?
Thin clients are used wherever organizations need many secure, consistent, centrally managed workstations.
Industry or setting | Why thin clients fit |
|---|---|
Healthcare | Keeps patient data off local devices and lets clinicians access records from shared stations |
Call centers | Delivers identical desktops to many agents with fast setup and replacement |
Financial services | Supports strict data security and compliance requirements |
Education | Simplifies labs and shared computers across classrooms and libraries |
Retail and hospitality | Powers point-of-sale, kiosks, and back-office terminals with central control |
Government | Supports secure, standardized access to sensitive systems |
Remote and hybrid work | Gives employees secure access to company desktops from home, with mobile thin clients for travel |
HP thin clients
We offer desktop thin clients in compact designs, from HP Pro models for essential virtual desktop access to HP Elite models with more performance, display support, and expansion. For example, the HP Elite t755 supports four 4K displays without an optional graphics card [HP]. HP mobile thin clients bring the same computing approach to a laptop form factor, and HP ThinPro PC Converter can turn existing PCs into HP ThinPro-managed thin clients.
Compare current models, including the HP Pro t550, HP Elite t655, HP t660, HP Elite t755, and HP mobile thin clients, in our thin client store.
How to Choose a Thin Client
To choose a thin client, start with your virtualization platform and users' workloads, then match the device's performance, displays, and connectivity to both.
Confirm platform compatibility. Make sure the thin client and its operating system support your VDI, Desktop as a Service, or cloud platform and its remote display protocol.
Match performance to the workload. Task workers using a few business apps need less power than users who run multimedia, video conferencing, or multiple high-resolution displays.
Check display support. Confirm the number of monitors, maximum resolution, and video ports needed for each role. Learn about multi-monitor setups.
Review connectivity and peripherals. Check Ethernet, Wi-Fi, USB ports, and support for devices such as smart card readers, scanners, and headsets.
Choose the operating system. Consider whether a Linux-based OS, Windows IoT, or another thin client OS best fits your management tools and security policies.
Plan central management. Confirm how IT will deploy, update, and monitor devices. Learn how business device management works.
Decide on form factor. Choose a desktop thin client for fixed workspaces or a mobile thin client for employees who travel or work from home.
Frequently Asked Questions About Thin Clients
Can a thin client work without the internet?
A thin client needs a network connection to reach its virtual desktop or apps. Some thin clients can connect to servers on a local network without internet access, but they generally can't do meaningful work when completely offline.
Is a thin client cheaper than a desktop PC?
A thin client device often costs less than a business desktop, but the total cost also includes servers, virtualization licenses, or cloud desktop subscriptions. Thin clients can lower costs over time through simpler management, lower power use, and longer service life.
Can you use a thin client at home?
Yes, you can use a thin client at home to connect to a company's virtual desktop or cloud desktop, as long as your organization supports remote access. A thin client isn't a good choice for general home computing because it relies on remote servers to run applications.
Are thin clients secure?
Thin clients are generally considered more secure than traditional PCs because they store little or no user data locally and run locked-down operating systems. Overall security still depends on how the servers, network, and virtual desktops are protected.
Can you convert an old PC into a thin client?
Yes, many organizations convert existing PCs into thin clients with conversion software that replaces or overlays the local operating system with a thin client OS. This can extend the life of older hardware while moving work to virtual desktops.
