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The Lenovo ThinkBook 15 Gen 4 (21DJ000PUS) is a sleek and efficient business laptop tailored for professionals and students seeking reliable performance at a great value. Equipped with the 12th Gen Intel® Core' i5-1235U processor, 8 GB DDR4 RAM, and a 256 GB NVMe SSD, it delivers fast and responsive computing ideal for day-to-day tasks such as spreadsheets, web collaboration, and light content creation. The 15.6″ Full HD anti-glare display offers ample screen real estate for multitasking, while Windows 11 Pro ensures secure and modern workflow integration.
With its refined metal chassis, backlit keyboard, privacy shutter webcam, and versatile connectivity options×such as Thunderbolt 4 and HDMI×the ThinkBook 15 Gen 4 balances portability, productivity, and security. It's perfect for hybrid work models, educational settings, and small businesses looking for a dependable yet cost-effective companion.
Memory-wise, this model ships with 8 GB DDR4, and according to Lenovo's PSREF, it supports upgradable memory up to 40 GB via an additional SO-DIMM slot. Storage is driven by a 256 GB NVMe SSD, while PSREF confirms dual M.2 slots (2280 + 2242) for expandability up to 2 TB . Connectivity includes Thunderbolt 4, USB-C, USB-A, HDMI, Ethernet, Wi-Fi 6, Bluetooth, and a full-size HDMI port. Factory-preinstalled with Windows 11 Pro, the notebook includes enterprise-grade features like BitLocker, remote desktop, and TPM 2.0, making it suitable for managed IT environments.
12th Gen Intel Core i5-1235U processor (10 cores, up to 4.4 GHz)
15.6″ Full HD (1920×1080) anti-glare display
8 GB DDR4 RAM (expandable to 40 GB)
256 GB NVMe SSD, dual storage slot support
Intel Iris Xe integrated graphics
Windows 11 Pro with business-class security
Thunderbolt 4, USB-C, USB-A, HDMI, Ethernet
Backlit keyboard, fingerprint reader, privacy shutter webcam
Designed for modern business demands, the ThinkBook 15 Gen 4 combines performance, security, and durability. The Core i5-1235U's hybrid core architecture allows efficient handling of multitasking workloads while optimizing battery life. Lenovo's thermal design keeps the system cool and quiet during extended use. The laptop meets MIL-STD compliance standards and includes a metal chassis that withstands daily wear. Practical tools like the physical webcam shutter and optional fingerprint sensor enhance privacy. With dual-channel memory and dual M.2 storage, the system is both flexible and future-ready. Backed by robust warranty and support, this ThinkBook maintains long-term productivity and value.
Intel Core i5-1235U (12th Gen)
15.6″ FHD (1920×1080) anti-glare IPS display
8 GB DDR4 memory (expandable)
256 GB NVMe SSD, dual M.2 slots
Intel Iris Xe graphics
Windows 11 Pro OS
Thunderbolt 4, USB-C/A, HDMI, Ethernet
Backlit keyboard, fingerprint reader, privacy shutter
Wi-Fi 6, Bluetooth connectivity
Durable metal chassis
| Specification | Details |
|---|---|
| Model Number | 21DJ000PUS |
| Product Series | Lenovo ThinkBook 15 Gen 4 (Intel) |
| Processor | Intel Core i5-1235U (12th Gen, 10 cores, up to 4.4 GHz) |
| Display | 15.6″ FHD (1920×1080), IPS, anti-glare |
| Memory | 8 GB DDR4-3200 (1 soldered + 1 SO-DIMM, up to 40 GB) |
| Storage | 256 GB NVMe SSD, dual M.2 slots (up to 2 TB) |
| Graphics | Intel Iris Xe Integrated Graphics |
| Operating System | Windows 11 Pro |
| Wireless | Wi-Fi 6 (802.11ax), Bluetooth 5.x |
| Ports | 1× Thunderbolt 4, 1× USB-C, 2× USB-A, HDMI, RJ-45 Ethernet |
| Security | TPM 2.0, fingerprint reader, webcam privacy shutter |
| Keyboard | Backlit, full-sized with numpad |
| Battery Life | Up to 8-9 hours typical use |
| Dimensions | ~359 × 236 × 19.9 mm |
| Weight | Approx. 1.7 kg |

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Lenovo 21DJ000PUS Thinkbook 15 GEN4 Core I5-1235U 1.3G 8GB 256GB SSD 15.6 inch FHD W11P
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