Can the memory in the UN 1250 be upgraded from 16 to 32GB by the user?

Yes, the memory in the UN1250 can be upgraded to a maximum of 64GB.

Does this come with Windows 11 installed?

Yes, the system comes with Windows 11 installed.

MINISFORUM Venus Series UN1250 Mini PC Core i5-1250P(12C/16T, up to 4.4GHz) 16GB RAM 500G SSD, HDMI/DP/USB-C 4K@60Hz Triple Outputs, 2.5G LAN, WiFi6E, 4X USB Port Desktop Computer

Core i5 Processor: This UN1250 Mini PC comes with the core i5-1250P processor, which is a high-end mobile CPU laptops based on the Alder Lake architecture. It has 12 cores and 16 threads, the Max Turbo Frequency is up to 4.4 GHz. Equipped with Intel Iris Xe Graphics eligible, the graphics frequency is 1.4 Ghz.
Triple 4K Output: It equipped with 3 video outputs, HDMI, DisplayPort and USB-C, all of them support 4K@60Hz. You can connect 3 monitors at the same time.
Expandable Storage: It has pre-installed DDR4 16G memory(up to 64GB) + M.2 2280 500G PCIe 4.0 SSD storage (up to 2TB). It supports ultra-high speed PCIe 4.0 SSD, the read and write speed is about 4 times faster than SATA SSD.
Rich Interfaces: This Mini PC comes with 1x 2.5G RJ45 Port, 1x HDMI, 1x USB3.2 Type-C, 1x DisplayPort, 2xUSB3.2, 2xUSB 2.0, 1x Audio Jack, 1x DMIC Port. The weight is only 570g and the size is 5x5x2inch.
Package Contents: 1x UN1250 Mini PC, 1x HDMI cable, 1x US Power Adapter, 1x Manual, 1x SATA cable.

Specification

Processor	Intel® Core i5-1250P Processor, 12 Cores/16 Threads
Graphics	Intel® Iris Xe Graphics (Graphics Frequency 1.4 GHz)
Memory	DDR4 Dual channel (SODIMM Slots×2, up to 3200MT/s, Max 64GB)
Storage	M.2 2280 PCIe4.0 SSD Slot ×1
Storage Expansion	2.5 inch SATA HDD Slot ×1 (SATA 3.0 6.0Gb/s)
Wireless Connectivity	M.2 2230 WIFI Support (Wi-Fi 6E, BlueTooth 5.2)
Video Output	HDMI2.0 ×1, USB-C ×1, DisplayPort1.4 ×1
Audio Output	HDMI ×1, 3.5mm Combo Jack ×1
Ports & Buttons 1	RJ45 2.5 Gigabit Ethernet Port ×1 USB3.2 Type-C ×1(Alt DP and Data and PD) USB3.2 Gen2 Type-A ×2 USB
Ports & Buttons 2	DisplayPort ×1 DMIC ×1 3.5mm Combo Jack ×1 Clear CMOS ×1
Power	DC 19V (adapter included)
System	Windows 11

DDR4 3200 Memory

The Minisforum UN1250 mini PC is powered by DDR4 3200 memory, providing rapid data access and smooth multitasking for demanding tasks.

It's perfectly suited for the high-performance needs of the Minisforum UN1250, ensuring swift and efficient data processing.

Minisforum UN1250 with PCIe 4.0 Connectivity

The Minisforum UN1250 mini PC features PCIe 4.0 connectivity, the latest generation of the Peripheral Component Interconnect Express interface. With PCIe 4.0, you can experience lightning-fast data access and enhanced overall system performance, perfectly complementing the capabilities of the Minisforum UN1250.