Lenovo ThinkCentre M91p USFF Desktop PC (Intel i5 2nd Gen, Windows 10 Pro, Refurbished)

The Lenovo ThinkCentre M91p Ultra Small Form Factor (USFF) desktop PC is a compact and professional business computer engineered for efficiency, stability, and space-saving performance. Equipped with an Intel Core i5 2nd Generation processor and Windows 10 Pro, this refurbished model is well-suited for office environments, educational use, and general home computing where reliability and compact design are essential.

Design and Build Quality

The ThinkCentre M91p USFF features Lenovo’s durable and space-efficient chassis design, making it ideal for offices with limited workspace. The ultra-small form factor allows for convenient placement on a desk, behind a monitor, or within tight spaces, without sacrificing essential functionality. Its steel frame construction ensures strength and longevity, reflecting Lenovo’s business-class build standards. The front panel provides easy access to key connections, including USB ports, an optical drive, and audio jacks, while the rear panel includes additional USB ports, DisplayPort, VGA, Ethernet, and power connectors. The overall design emphasizes practicality, accessibility, and long-term reliability.

Hardware and Specifications

This desktop is powered by an Intel Core i5 2nd Generation processor, typically the i5-2400S or i5-2500S, featuring four cores and four threads with clock speeds ranging from 2.5 GHz to 3.3 GHz depending on the model. The system supports DDR3 memory, usually up to 8 GB in the USFF configuration. Storage options include SATA hard drives or SSDs, allowing users to choose between larger capacity or faster performance. Integrated Intel HD Graphics provides display output suitable for standard office and multimedia tasks. Connectivity options include multiple USB 2.0 ports, DisplayPort, VGA, Ethernet LAN, and audio inputs and outputs.

Performance

The Intel Core i5 2nd Gen processor provides balanced performance for everyday computing tasks such as document editing, spreadsheets, web browsing, and light multitasking. When configured with an SSD and adequate memory, the system runs efficiently and delivers quick response times. While the USFF design limits support for dedicated graphics cards and high-end upgrades, it performs well for standard business and educational workloads. Its quiet and energy-efficient operation makes it a dependable choice for continuous use in professional settings.

Upgradability and Maintenance

The ThinkCentre M91p USFF is designed for reliability, though its compact form factor restricts major hardware upgrades. Users can replace or upgrade memory and storage drives, but expansion options such as PCIe slots are limited due to space constraints. The internal layout allows for straightforward maintenance, with accessible panels for basic upgrades and cleaning. The small size also contributes to reduced power consumption and lower operating noise, making it suitable for environments where space and efficiency are priorities.

Software and Operating System

This refurbished model typically includes Windows 10 Pro preinstalled, offering a secure and stable operating system for productivity and administrative use. Windows 10 Pro provides support for modern applications, enhanced security features, and improved device management tools. Before use, it is recommended to verify system activation and ensure that all drivers are up to date for optimal performance.

Overall Assessment

The Lenovo ThinkCentre M91p USFF desktop PC offers a practical combination of compact design, dependable performance, and professional-grade construction. Its Intel Core i5 2nd Generation processor delivers sufficient power for routine business operations and everyday computing tasks. While the ultra-small form factor limits expansion potential, it provides significant advantages in terms of space efficiency and energy savings. As a refurbished system, it remains a solid choice for offices, institutions, and users who require a reliable, compact, and low-maintenance desktop for consistent day-to-day performance.