General
Model: ThinkPad P51s — part of the P-series slim workstation line.
Form factor: 15.6″ clamshell mobile workstation.
Weight/Dimensions: Approx. ~1.9-2.0 kg; thickness ~20 mm.
Build: Business-class, MIL-STD tested durability.
Processor / Graphics
CPU: Your unit states “6th gen i7”. Indeed some P51s configs list Intel Core i7-6500U / i7-6600U as options.
GPU: NVIDIA Quadro (2 GB GDDR5 dedicated) + integrated Intel HD Graphics (depending on CPU). Many P51s used Quadro M520 (2 GB).
Display
Size: 15.6″
Options: Full HD (1920×1080) IPS or 4K UHD (3840×2160) IPS
Finish: Typically non-touch, anti-glare matte panel (business variant).
Memory (RAM)
In your spec: 16 GB RAM.
Memory type: DDR4 SDRAM (2133 MHz typical) in SO-DIMM slots.
Slots: 2 × SO-DIMM.
Maximum supported: Up to ~32 GB in many variants.
Upgrade Note: Yes — RAM is upgradeable (not solder-only) because of SO-DIMM slots.
Storage
Your spec: 256 GB SSD.
Storage type: M.2 NVMe or SATA SSD depending on variant. Many P51s support M.2 SSD.
Drive bay: Some versions allow additional 2.5″ drive or second slot depending on config.
Upgrade Note: Yes — storage is upgradeable; you can replace the SSD with a larger capacity drive.
Connectivity & Ports
USB: Several USB-A ports + at least one USB-C/Thunderbolt 3 (in some configs).
Display outputs: HDMI, mini-DisplayPort, either Thunderbolt/USB-C depending.
Card reader: 4-in-1 SD card reader.
Network: Gigabit Ethernet, WiFi 802.11ac + Bluetooth.
Battery & Power
Battery life: Up to ~10-14 hours depending on usage & config.
Power adapter: ~65 W typical.
Other Features
Keyboard: ThinkPad high-quality keyboard, TrackPoint.
Security: Fingerprint reader (in many configs), TPM, business-level security features.
Certifications: ISV certified for professional applications, MIL-STD tested.
Strengths & Constraints
Strengths: Good professional graphics (Quadro), upgradeable RAM/storage, durable build, business features.
Constraints: 6th-gen CPU means dual-core, less multi-core power compared to modern machines; older generation so battery, support and new driver availability may be less optimal; GPU is modest (2 GB) so heavy 3D workloads will be limited.
