ASUS ExpertCenter PN55 Mini-PC Ryzen AI 9 HX 470/ 32GB/ 1TB SSD Win11 Pro Dual 2.5G LAN

General

Processor & Graphics

Memory & Storage

Connectivity

Ports & I/O

Physical & Environmental

Power

Display and Video Output Compatibility

Two DisplayPort 1.4 outputs, one HDMI 2.1 output and a USB4 Type-C port together support up to four displays. Standard DisplayPort and HDMI cables connect directly to most current monitors; a USB-C to DisplayPort or HDMI cable is needed for a monitor without native USB-C input on the fourth display.

Dual LAN Use Cases

The two 2.5G RJ45 ports support a resilient wired connection, bridging two separate network segments, or keeping a spare wired port available for future re-cabling. Configuration is done in Windows network settings; talk to us if you need a specific dual-LAN topology configured before delivery.

VESA Mount and Desk Placement

A VESA mounting bracket is available as an optional accessory to fix the PN55 to the back of a compatible monitor arm, clearing the desk entirely. At 130 x 130 x 34 mm it also sits comfortably flat on a desk where a VESA mount is not required.

Peripheral and Accessory Compatibility

The front-panel USB 3.2 Gen 2 Type-C and Type-A ports handle everyday peripherals — a USB keyboard, mouse, webcam or external drive — without needing to reach behind the unit. The rear USB4 Type-C port additionally supports high-bandwidth peripherals such as external SSD enclosures or a USB-C dock, and can double as one of the four display outputs when a monitor rather than a storage device is connected. Standard Windows drivers cover the fingerprint reader for Windows Hello enrolment without additional software.

In the Box

AC power adapter, power cord, screw pack, user manual and warranty card. Keyboard, mouse and the VESA mount bracket are available as optional accessories and are not included as standard.

ASUS ExpertCenter PN-Series Mini-PC Range — Ordering Information

All six models above are current ASUS ExpertCenter Mini-PC configurations carried by SourceIT. Email sales@sourceit.com.sg quoting the part number to check stock and lead time.

ASUS hosts the official product and specification pages for this model. The links below are ASUS's current product and specification pages for this model family.

For the PDF datasheet, user manual or driver downloads, email sales@sourceit.com.sg quoting PN55-S90021NL and we will send you the current files directly.

Is this a complete system or a barebone unit?

Complete system. The PN55-S90021NL ships with the AMD Ryzen AI 9 HX 470 processor, 32 GB DDR5 memory and a 1 TB PCIe 4.0 NVMe SSD already fitted, ready for Windows 11 Pro setup on first boot.

How does this differ from the PN55-S50019NL in your catalogue?

Both share the same 130 x 130 x 34 mm chassis, dual 2.5G LAN and Wi-Fi 7. This model steps up to the Ryzen AI 9 HX 470 processor with Radeon 860M graphics (versus 840M) and a higher-rated 55 TOPS NPU, and ships with 32 GB of memory rather than 16 GB as standard.

What does the NPU actually do?

The onboard XDNA2 NPU, rated at up to 55 TOPS, runs supported on-device AI features in Windows 11 locally rather than in the cloud, and is why this configuration qualifies for Copilot+ PC certification well above Microsoft's minimum threshold.

Can memory or storage be upgraded later?

Yes. ASUS documents up to 64 GB total across the two SO-DIMM slots, and the M.2 slot supports drives up to 2 TB, so both can be increased after purchase if the workload grows.

How many monitors can it drive?

Up to four displays via the two DisplayPort 1.4 outputs, the HDMI 2.1 output and the USB4 Type-C port, all supporting 4K resolution per ASUS's specification.

Is it suitable for light creative or CAD-viewing work rather than just office use?

The Radeon 860M graphics and 55 TOPS NPU give this configuration more headroom than a typical office mini-PC for tasks like video encoding, multi-app multitasking and AI-assisted content work, though it remains integrated graphics rather than a discrete GPU — talk to us about your specific application before ordering if you are unsure it will cope.

Is a dedicated graphics card an option?

No. Like the rest of the PN-series, the PN55 chassis is built around integrated graphics only — there is no slot for a discrete GPU. The Radeon 860M is the strongest integrated graphics option ASUS offers in this chassis; if you need a discrete GPU, this Mini-PC family is not the right fit and we can suggest a small-form-factor tower instead.

What does "onsite" warranty mean in practice in Singapore?

An onsite warranty means a qualifying hardware fault is diagnosed and repaired at your premises by an authorised technician, rather than requiring you to ship the unit back to a service centre and wait for a return. SourceIT coordinates the onsite claim on your behalf as part of the local support that comes with every unit we supply.

Does it come with a Singapore warranty and a GST invoice?

Yes. Every ASUS ExpertCenter PN55-S90021NL sold by SourceIT comes with local Singapore support and a GST invoice; ASUS backs this model with a 3-year onsite warranty.