Material: Plastic + Mesh fabric Bluetooth version/chipset: 5.4/ATS2853 Transmission Distance: 12M Working voltage: 18.5V Impedance: 4Ω Speaker power: Tweeter: 50W * 2 Subwoofer: 200W Battery (mAh):30000mAH/18.5V*6000;18650/2000mA*15; 3 in series and 5 in parallel Charging time: about 3 hours Calling: 20 hours Music playback: 12 hours Standby time: 6 months 1.5.4 wireless, fast, stable, and efficient connection, excellent sound quality 2 . Sound Card/Karaoke/wireless speaker, all in one, built-in DSP, multiple EQ settings, support internal monitoring/recording/live streaming function, 433/360° omnidirectional remote control (can work through walls) 3. Efficient speakers and power amplifier for loud sound and high-fidelity music playback 4,30000mAh power bank (18.5V*6000mAh; 18650/2000mA*15; 3 in series and 5 in parallel), colorful lights available in various modes, controllable flashing lights CTN GW: 18.5kg ± 0.2kg Carton size: 50.5 * 44.2 * 39cm
The ViewSonic VA24D1-H 24″ FHD 100Hz Monitor delivers smooth and clear visuals for work, gaming, and daily use. It offers Full HD resolution with bright colors. The screen shows sharp details that improve movies, documents, and web browsing. This makes your viewing experience more comfortable. Moreover, the ViewSonic VA24D1-H 24″ FHD 100Hz Monitor includes a fast 100Hz refresh rate. This feature reduces motion blur and screen tearing. It makes gaming and fast scenes much smoother. It also improves general tasks like scrolling and tracking movement. In addition, the monitor features HDMI and VGA connections. These ports make setup quick and simple. You can connect laptops, desktops, and media players easily. This gives you strong flexibility for work and entertainment. Furthermore, the ViewSonic VA24D1-H 24″ FHD 100Hz Monitor includes important eye-care technology. The flicker-free screen helps reduce eye strain. The blue light filter adds more comfort during long hours. This makes the monitor ideal for study, office work, and long sessions. Also, the slim bezel design gives the monitor a modern and clean look. It fits well in home and office spaces. The thin edges help create smooth multi-monitor setups. This improves both productivity and style. The stand on the ViewSonic VA24D1-H 24″ FHD 100Hz Monitor offers stable support. You can tilt the screen to find a comfortable angle. This helps you maintain a healthy posture. It also improves your overall viewing comfort. Overall, the ViewSonic VA24D1-H 24″ FHD 100Hz Monitor offers clarity, smooth motion, and strong comfort. It works well for gaming, streaming, office tasks, and daily use. It is a reliable monitor for users who want simple performance and modern design. Specifications: Display : 24″ IPS Resolution : 1920×1080 Refresh Rate : 100Hz Response Time : 5ms
The ASUS ROG Strix XG27ACS-W 27 inch QHD 180Hz 1ms Fast IPS Gaming Monitor is a 27-inch gaming display designed for smooth performance and sharp image quality. It uses a Fast IPS panel that delivers wide viewing angles and accurate colors for gaming and everyday use. It features a QHD (2560×1440) resolution, which provides more detail and screen space compared to Full HD. Therefore, it improves visibility in games and productivity tasks. The ASUS ROG Strix XG27ACS-W 27 inch QHD 180Hz 1ms Fast IPS Gaming Monitor supports a 180Hz refresh rate for smoother motion in fast-paced gameplay. In addition, it includes a 1ms response time to reduce motion blur during rapid actions. It supports adaptive sync technology, which helps reduce screen tearing and stuttering when paired with compatible graphics cards. As a result, gameplay feels smoother and more stable. Moreover, it includes HDR support for improved contrast and brightness in compatible content. The monitor also provides gaming display modes and on-screen settings for quick adjustments. The white design gives it a clean and modern appearance suitable for light or themed setups. Overall, the ASUS ROG Strix XG27ACS-W 27 inch QHD 180Hz 1ms Fast IPS Gaming Monitor is built for responsive gaming, clear visuals, and a premium white aesthetic. Specifications: 27-inch QHD (2560×1440) display 180Hz refresh rate 1ms response time Fast IPS panel White premium design
The Lenovo ThinkVision T24d‑30 is a 24″ WUXGA (1920×1200) IPS monitor designed for professional and office use. It delivers crisp detail with a 16:10 aspect ratio and broad viewing angles. The panel features anti‑glare treatment and 300 cd/m² brightness to support long work sessions with reduced eye strain. This monitor includes diverse connectivity with HDMI, DisplayPort, and VGA inputs. It also offers a built‑in USB hub and integrated stereo speakers. Adjustable ergonomics with height, pivot, tilt, and swivel make it easy to position for comfort. The monitor supports VESA mount and includes low blue light and flicker‑free technologies for user comfort. Specifications: 24″ WUXGA (1920×1200) IPS display with 16:10 aspect ratio Anti‑glare panel with 300 cd/m² brightness for clear visuals HDMI, DisplayPort, and VGA inputs for versatile connectivity Built‑in USB hub and integrated stereo speakers Adjustable height, tilt, swivel, and pivot stand with VESA support
New 01AV423 01AV424 01AV422 SB10K97579 SB10K97581 11.4V 24Wh 2080mAh Laptop Battery Compatible with Lenovo ThinkPad T470 61 Series Notebook About this item Condition: New Voltage: 11.4V Capacity: 24Wh/2100mAh Replace Part Number: 01AV423 01AV424 SB10K97581 01AV422 SB10K97579 Fit for: LENOVO Thinkpad T470 T570 P51S 61 Series Laptop
Philips 22E1N1100LA/71 22-inch frameless monitor delivers smooth motion and clear visuals for everyday use and casual gaming. It focuses on high refresh rate performance, fast response time, and a clean modern design. Additionally, it features a 21.5-inch VA panel with Full HD resolution (1920 × 1080). This provides strong contrast and clear detail, so it improves overall viewing quality for work and media. Moreover, it supports an overclockable 120Hz refresh rate. As a result, it delivers smoother motion and reduces screen stutter during scrolling and gameplay. The monitor includes a 1ms MPRT response time. Therefore, it reduces motion blur and keeps fast-moving visuals sharp and clear. In addition, it supports Adaptive Sync technology. This helps reduce screen tearing and ensures more stable frame delivery in supported content. Furthermore, it includes VA wide-view technology with 178° viewing angles. So it maintains consistent color and brightness from different positions. It also features LowBlue Mode and Flicker-Free technology. These reduce eye strain during long sessions of work, study, or entertainment. Philips 22E1N1100LA/71 22-inch 120Hz monitor provides fast performance, sharp visuals, and comfortable viewing for daily multimedia use. Specifications: 21.5-inch VA panel with Full HD 1920 × 1080 resolution Overclockable 120Hz refresh rate for smooth motion 1ms MPRT response time for reduced blur Adaptive Sync for tear-free performance Frameless design with LowBlue Mode and Flicker-Free technology
ViewSonic 27″ 2K QHD The ViewSonic 27″ 2K QHD Designed with creative professionals in mind. the ViewSonic VP2756-2k delivers colors on screen. Pantone validated 100% sRGB coverage provides precise color your work looks how it should. every time. A USB-C port that easily connects with your devices for easy charging and data transfer. Ergonomic engineering gives you the flexibility to do more without injury, while Auto Pivot lets shift between horizontal. and Introducing VP56 Series Inspiration starts within, then appears to the world on the ViewSonic VP2756-2k, delivered with stunning true-to-life, high precision colors on an QHD frameless screen, with an ergonomic stand and USB-C support. Bring Your Colors to Life 100% sRGB color gamut that meets industry standards and can produce color precisely. Pantone® Validated ensures high levels of fidelity in simulating the full range of real-world colors. These two features combine to give ColorPro® VP2756-2K high every creative to get their colors right, every time. Precise Color With Delta E < 2 color accuracy, the ColorPro® VP2756-2K delivers stunning color reproduction that ensures. the colors in your videos and photos are true-to-life and nearly indistinguishable from the color seen by the naked eye. Exquisite Quality out of the Box Every unit is pre-calibrated at the factory and comes with its own color calibration report. Giving you the highest quality color calibration possible, right out of the box. Time spent fine-tuning ColorPro® monitors bring you the highest quality color calibration possible. Big Picture, Small Details Image quality is paramount for creative professionals, and with a 2K QHD (2560 x 1440) . resolution panel, images on the ColorPro® VP2756-2K series ensure incredible detail. Find Your Perfect Angle With a full range of swivel, pivot, tilt, and height adjustments, The ColorPro® VP2756-2K allows you to find the most comfortable. monitor positioning for your .Auto Pivot can even let photos to be automatically adjusted to the screen’s orientation when pivoted. Specifications: Specifications QHD Pantone| sRGB| USB-C 60W|CAM/CAD| Portrait mode for photography certified for blue light filter Auto Pivot, Swivel, Tilt, and Height adjust Split Screen 27 Inch 60 Hz QHD 2 USB-A 1 USB-C 1 HDMI 1 Display Port 1 year warranty Manufacturer Link
RK ROYAL KLUDGE RK918 Wired Mechanical Keyboard, RGB Backlit Gaming Keyboard with Large LED Surrounding Side Lamp, Full Size 108 Keys Mechanical 100% Anti-Ghosting Computer Keyboard, Red Switch White About this item 【Full Size 108 Keys & Anti Ghosting Mechanical Keyboard】: 100% percent layout 108 key Mechanical keyboard. All keys do not conflict, ensure that every click is registered, and greatly improve the gaming and typing experience. Press FN and F1~F12 keys could quickly activate the multi-function keys, running for what you demand immediately. It is a great choice as a Christmas gift 【RGB Backlit & LED Surrounding Side Lamp】: The RGB backlight keyboard has more than 20 backlight modes, including interactive backlight, breathing backlight modes, dynamic RGB mode, etc. Besides, there are large LED surrounding side lamps. These all will give you more enjoyable when you gaming or typing at night 【Mechanical Red Switches & Double Shot Keycaps】: Offering linear and quiet typing feedback, smooth top-to-bottom actuation travel distance with shallow sound. If you prefer a quiet environment and a small operating force, red switches are the right choice. Double shot keycap type is produced when two layers of plastic are molded into each other. No printing is necessary. The result is a key legend that will never fade or chip off 【Wide Compatibility & Software Support】: Compatible with Windows, Mac, Linus, etc. The wired connection enables stable transmission without worrying about the impact of the signal. Through RK software, you can customize RGB mode and color, redefine key function, customize macros, and set gaming mode 【Professional and Reliable Service】: RK ROYAL KLUDGE has a professional service team. Over the years, we have kept bringing high-quality products and services to customers, so that we have gained the love and trust of many customers. If you have any questions, you can contact us anytime. RK ROYAL KLUDGE will spare no effort to provide every customer with the best service within 24 hours.
Specifications Input/Output USB Sound Mode Live Sound Mode, Standard Mode Category Speakers Use HOME Bluetooth Version 5.0 Input Power (W) <25 W Active Noise-Cancellation PASSIVE Wi-Fi Music Apple Music Voice Control No Frequency Range 100Hz-20kHz Output Power 35W Display Screen No Waterproof No Support APP Yes Support Memory Card Yes Material Plastic Playback Function MP3 Remote Control No Support Apt-x No Intelligent Personal Assistant None Display Screen No Built-in Microphone No Audio Crossover Full-Range Number of Loudspeaker Enclosure 1 Power Source Battery PMPO 25W Channels 2 (2.0) Feature Play Video, Wireless Subwoofer, Wireless Rear Speakers Battery Yes Communication AUX, USB, Bluetooth Speaker Type Portable Cabinet Material Plastic Brand Name SwYiSm Origin Mainland China Certification CE Function 1 Wireless Bluetooth Function 2 Originality Function 3 Vintage Kerosene Lamp Function 4 Decorative Lamp
Professional battery testing flex cable for MacBook Pro 15″ (Model A1990, 2018–2019)—used by technicians to bypass a faulty battery or diagnose power-on issues without permanent battery removal. Enables safe logic board testing and troubleshooting. This is not a replacement battery cable—it’s a diagnostic tool used in repair workflows. It mimics the battery’s presence by providing the necessary SMBus signal and power-enable lines to the logic board, allowing the MacBook to: Power on without a battery installed Test logic board functionality independently Diagnose whether a no-power issue is caused by the battery or logic board MacBook Pro 15″ (2018–2019) Model: A1990 Model Identifiers: MacBookPro15,2 Chip: Intel Core i7/i9 Model: A1990 Model Identifiers: MacBookPro15,2 Chip: Intel Core i7/i9 ⚠️ Not compatible with A1707 (2016–2017), A2159 (16″), or any M1/M2 models. Simulates battery presence via correct SMBus resistance and ID signals Includes power-enable circuitry matching Apple’s safety protocol Pre-terminated with OEM-style connector for A1990 logic board Allows safe bench testing of logic boards during repair Diagnosing “no power, no fan spin, no display” issues Verifying if a logic board powers on without risking a shorted battery Testing after liquid damage or DC-in board replacement Avoiding unnecessary battery replacements during diagnostics Not for permanent installation—intended for temporary diagnostic use only Does not charge or store power—requires connected USB-C power adapter to operate Must be used with a known-good power adapter (87W recommended) Not a consumer part—designed for professional repair shops and technicians
In the landscape of monitors, the ViewSonic VX3218C-2K stands out as a cutting-edge solution, offering immersive visual brilliance and advanced features for an unparalleled viewing experience. Transitioning to its key features, the VX3218C-2K excels in providing a stunning 2K resolution. This monitor is designed to deliver crisp and detailed visuals, ensuring a visually captivating experience for work, gaming, or entertainment. Moreover, this display impresses with its sleek and modern design. The ViewSonic VX3218C-2K not only enhances the aesthetics of your workspace but also ensures a slim profile and minimal bezels, creating an immersive viewing environment. In addition to its functionality, the VX3218C-2K offers user-friendly controls and versatile connectivity options, ensuring a seamless and adaptable experience. This monitor effortlessly adapts to various settings, providing flexibility for different viewing preferences. Furthermore, ViewSonic’s commitment to user satisfaction is evident in the VX3218C-2K’s enhanced color technology and eye-care features. It’s a reliable companion for extended viewing sessions, offering both visual excellence and comfort. In conclusion, the ViewSonic VX3218C-2K redefines immersive brilliance, combining high-resolution visuals, sleek design, and user-friendly features. Elevate your viewing experience effortlessly with the VX3218C-2K – your gateway to an immersive and captivating visual journey! Specifications Curve : 1500R Refresh Rate : 165Hz Response Rate : 1ms Ultra-Fast Input Technology : AMD FreeSync Premium ViewMode: Game/Movie/Web/Text/Mono Speaker : 2W Dual Speakers Colors : HDR10 Input : HDMI
Replacement cable for MacBook Pro A2794, designed to restore proper connection and functionality for damaged or faulty internal cables. Ideal for technicians and repair shops, ensuring reliable performance and correct fit for A2794 models. Type: USB-C to USB-C charging/data cable Model: A2794 Length: 2 meters (≈ 6.6 ft) Color: White Design: Woven braided cable for durability Connectors: USB-C (Male) on both ends Power Delivery: Supports up to 240 W high-power charging when used with a compatible USB-C PD adapter Data Transfer: USB 2.0 transfer speeds Designed for fast charging and syncing between USB-C devices
The Lexar NM620 2TB NVMe SSD delivers exceptional read speeds up to 3,300 MB/s and write speeds up to 3,000 MB/s through its PCIe Gen3x4 NVMe 1.4 interface. Built with 3D NAND Flash and a compact M.2 2280 form factor, it offers fast, efficient, and reliable storage for gaming, video editing, and professional workloads. The Lexar NM620 2TB M.2 2280 NVMe SSD is engineered for users who need high-performance storage without compromise. Using PCIe Gen3x4 lanes and the NVMe 1.4 protocol, it provides up to six times faster transfer speeds than SATA SSDs. Its slim, cable-free design makes it an ideal upgrade for desktops, laptops, and ultrabooks that demand higher data throughput and improved responsiveness. ⚡ High-Speed NVMe Performance: Delivers sequential read/write speeds up to 3,300 MB/s / 3,000 MB/s for faster system boot-ups, game loading, and large-file transfers. 💾 Large 2 TB Capacity: Provides ample storage for 4K media, applications, and high-volume project files. 🔋 Power-Efficient Design: Optimized for lower power draw, helping extend laptop battery life and reduce operating temperatures. 🔒 Advanced Data Protection: Utilizes LDPC (Low-Density Parity-Check) and end-to-end data path protection for accurate, consistent data integrity. 🧊 Compact Form Factor: The M.2 2280 design supports easy installation in modern systems without cables. 🧠 3D NAND Architecture: Ensures improved endurance, sustained performance, and stability during intensive workloads. 🧰 Durability Tested: Resistant to shock and vibration for dependable performance across a range of operating environments.
The Samsung 77 OLED S85F 4K Vision AI Smart TV QA77S85FAEXTW delivers a premium home cinema experience built on advanced OLED technology. It produces deep blacks, rich colors, and strong contrast, so movies, sports, and games look more realistic on the large 77-inch screen. OLED technology controls each pixel individually, so every detail appears with high precision. This improves dark scenes by keeping blacks deep and detailed, while bright areas stay clean and accurate. As a result, the picture stays balanced in both bright and dark environments. Samsung Vision AI improves picture and sound in real time. It analyzes each scene and adjusts brightness, color, and sharpness automatically. Therefore, the Samsung 77 OLED S85F 4K Vision AI Smart TV QA77S85FAEXTW always delivers optimized visuals without manual settings. In addition, AI upscaling improves lower-resolution content closer to 4K quality. HDR expands contrast and color depth, making visuals more lifelike. Fast motion also appears smoother and clearer, which improves sports and action viewing. The Smart TV system gives access to streaming apps, games, and smart home features. It runs smoothly and is easy to navigate. In addition, the slim design with thin bezels gives the Samsung 77 OLED S85F 4K Vision AI Smart TV QA77S85FAEXTW a modern, premium look. Overall, this Samsung OLED TV combines strong picture quality, AI optimization, and smart connectivity for a high-end viewing experience. Specifications: OLED technology delivers deep blacks and rich color accuracy 77-inch 4K display provides immersive large-screen viewing Vision AI optimizes picture and sound automatically in real time HDR enhances contrast, brightness, and color depth Smart TV platform supports streaming apps and smart features
A capable pre-owned Dell Latitude 5501 with 15.6" touchscreen, 9th Gen Core i5, 16GB RAM, 256GB SSD, and NVIDIA GeForce MX150 2GB—ideal for business users who need a balance of performance, portability, and light graphics power.
The ViewSonic 27″ 180Hz Gaming Monitor delivers an ultra-smooth gaming experience. With a 180Hz refresh rate, every motion looks fluid and lag-free. This makes it perfect for fast-paced games like shooters and racing titles. Featuring a 1ms response time, the monitor reduces motion blur and ghosting. You get sharper visuals and smoother gameplay, giving you a competitive edge. Say goodbye to input lag and enjoy instant reactions. The ViewSonic 27-inch Gaming Monitor offers Full HD resolution for crisp and detailed visuals. Whether you’re gaming, streaming, or working, you’ll enjoy clear images with vibrant colors. The IPS panel ensures wide viewing angles and accurate colors. With AMD FreeSync technology, screen tearing and stuttering are eliminated. The monitor syncs with your graphics card for seamless gameplay. This ensures a smoother and more immersive gaming experience, even in demanding scenes. This monitor is designed for comfort and versatility. The ergonomic stand allows you to adjust height, tilt, and swivel for the perfect viewing angle. You can also mount it on a wall for a clean setup. Multiple connectivity options make the ViewSonic 27″ 180Hz Gaming Monitor easy to use. It includes HDMI and DisplayPort, allowing you to connect to gaming consoles, PCs, and more. With a sleek, modern design, this monitor enhances any gaming setup. The narrow bezels create a seamless multi-monitor experience. Enjoy distraction-free gaming with an immersive display. Upgrade your gaming experience with the ViewSonic 27″ 180Hz Gaming Monitor. Enjoy smooth performance, fast response times, and stunning visuals. Specifications: Display : 27″ IPS Resolution : 1920 x 1080 FHD Refresh Rate : 180Hz Response Rate : 1ms MPRT
The Acer V246HQL 24″ 60Hz Monitor is a perfect choice for work, study, and entertainment. It delivers clear visuals with a full HD resolution. The 24-inch screen provides a comfortable viewing experience for long hours. With a 60Hz refresh rate, this monitor ensures smooth performance for daily tasks. It is great for browsing, office work, and watching videos. The 5ms response time reduces motion blur, making images sharper. The Acer V246HQL features LED-backlit technology, offering bright and vivid colors. It enhances contrast and clarity for a better viewing experience. The anti-glare screen minimizes reflections, making it easy on the eyes. This 24-inch monitor supports Full HD 1920 x 1080 resolution. It delivers sharp images with great detail. Whether for work or entertainment, this resolution ensures high-quality visuals. The Acer V246HQL 24″ 60Hz Monitor includes VGA and HDMI ports for flexible connectivity. You can easily connect it to computers, laptops, and other devices. The tiltable stand allows you to adjust the screen for better comfort. Designed for efficiency, this monitor has low power consumption. It is Energy Star certified, helping to reduce electricity costs. It is an eco-friendly choice for home and office use. The Acer V246HQL 24″ 60Hz Monitor is built with eye-care technology. It includes Flicker-Free and Blue Light Filter features. These help reduce eye strain during long hours of use. Its slim and modern design makes it a great addition to any workspace. It fits easily on desks, saving space while providing a high-quality display. In conclusion, the Acer V246HQL 24″ 60Hz Monitor is a reliable and budget-friendly option. It offers excellent performance for everyday tasks with clear visuals and comfortable viewing. Specifications: Display : 24″ VA Resolution : 1920×1080 Refresh Rate : 60Hz Response Rate : 5ms
NETIS ST-3108 8-Port Fast Ethernet Switch Network Desktop Hub Retail Eight (8) 10/100Mbps RJ45 ports, Auto-Negotiation & Auto MDI/ MDIX IEEE 802.3x flow control for Full Duplex mode and back pressure for Half Duplex mode 1.6Gbps switching fabric capacity/backplane bandwidth Green Ethernet technology for effective power saving LED indicators for simple diagnostics and management Plug and play, no configuration required Compact plastic case, desktop design for home and office use Interface: 8* 10/100M TX ports LED: PWR, 1-8 Cabling Type 10Base-T:UTP Cat.3 or up, 100Base-TX:UTP Cat.5 or up Standard: IEEE 802.3 10Base-T, IEEE 802.3u 100Base-TX,IEEE802.3ab 1000Base-T Access Method: CSMA/CD Transmission Method: Store and Forward Data Transmission Rate: 10/100Mbps(Half-duplex), 20/200Mbps(Full-duplex) MAC Address Table: 1K Operating Temperature: 0-40C Storage Temperature: -40, 70C Operating Humidity: 10%-90%RH non-condensing Storage Humidity: 5%-90%RH non-condensing Input: 100-240V 0.2A 50/60HZ Output:DC 9V/500mA
BenQ RE6504A 65” 4K UHD Interactive Flat Panel is a large touchscreen display designed for classrooms, meeting rooms, and collaborative work environments. It combines a 4K IPS panel, multi-touch support, and an Android-based system for interactive use without needing a separate PC. It features a 65-inch IPS display with 3840 × 2160 (4K UHD) resolution. Therefore, it delivers sharp visuals and wide viewing angles for group collaboration. In addition, it supports up to 40-point infrared touch input, allowing multiple users to write or interact at the same time. Moreover, it uses Android 14 (EDLA certified in most regions) with built-in apps and Google services support. As a result, users can run whiteboard tools, presentations, and educational apps directly on the display. The panel runs at 450 nits brightness with a 1200:1 contrast ratio. Therefore, it stays readable in bright rooms while maintaining stable image quality. In addition, it uses 4K resolution at 60Hz for smooth visual output from connected devices. Furthermore, it includes connectivity such as HDMI, USB, USB-C with power delivery, LAN, and OPS slot support. As a result, it works with laptops, external PCs, and modular computing systems. It also includes built-in speakers (typically 2 × 20W depending on configuration). Therefore, it supports presentations and lessons without external audio equipment. Finally, the BenQ RE6504A delivers a responsive 4K interactive experience with strong connectivity, multi-touch control, and Android integration for education and business use. Specifications: Display: 65-inch IPS panel with 3840×2160 4K UHD resolution Touch: Up to 40-point infrared multi-touch support System: Android 14 (EDLA) with built-in apps and tools Brightness: 450 nits with 1200:1 contrast ratio Connectivity: HDMI, USB, USB-C, LAN, OPS slot support
Reliable, secure, and built for productivity—the Lenovo ThinkPad T14 features a 10th Gen Intel Core i5 processor, 16GB RAM, and a fast 256GB SSD in a durable,14-inch business laptop.