A space-saving pre-owned Lenovo ThinkCentre M920z all-in-one desktop with 24-inch display, 8th Gen Core i5, RAM upgrade options, and SSD storage options. Ideal for offices, education, and home use with clean design and reliable performance.
Apple 60W MagSafe Power Adapter (for MacBook and 13-inch MacBook Pro) The 60 Watt MagSafe Power Adapter features a magnetic DC connector that ensures your power cable will disconnect if it experiences undue strain and helps prevent fraying or weakening of the cables over time. In addition, the magnetic DC helps guide the plug into the system for a quick and secure connection. When the connection is secure, an LED located at the head of the DC connector will light up; an amber light lets you know that your portable is charging, while a green light tells you that you have a full charge. An AC lead is provided with the adapter for maximum lead length, while the AC wall adapter (also provided) gives users an even easier and more compact way to travel. Designed to be the perfect travelling companion, the adapter has a clever design that allows the DC cable to be wound neatly around itself for easy cable storage. This power adapter recharges the lithium polymer battery while the system is off, on, or in sleep mode. It also powers the system if you choose to operate without a battery. Compatible with MacBook and 13-inch MacBook Pro. See this article for more details about choosing the right one. Knowing which specific Mac model you have is important. If you are running OS X Lion (10.7) or later, go to the “” menu at the top left of your screen, choose “About this Mac” then click the “More Info…” button. Your Mac model and generation will be displayed. If you are running an earlier version of OS X, you can enter your serial number here to find out which model you have.
A1989 Battery Replacement, A1964 Battery for MacBook Pro 13″ A1989 (Mid 2018 2019) A2251(2020 Release) EMC 3214 3358 3348 MR9Q2LL/A MR9R2LL/A MR9T2LL/A MR9U2LL/A MR9V2LL/A MV962LL/A MV9A2LL/A 【Specification】Voltage: 11.41V. Capacity: 58Wh/ 5086mAh. Battery Type: Li-ion. Condition: Brand new, from high quality materials, top circuit boards and smart chip. 【Compatible Part Number】A1964 A1989 A1989(EMC 3214) A1989(EMC 3358) A2251(EMC 3348) 020-02497 616-00419. 【Compatible Laptop Models】MacBook Pro 13-Inch model A1989 (Mid 2018, Mid 2019) , A2251(2020 Release), Order No MR9Q2LL/A MR9R2LL/A MR9T2LL/A MR9U2LL/A MR9V2LL/A MV962LL/A MV972LL/A MV982LL/A MV992LL/A MV9A2LL/A MWP72LL/A MWP82LL/A MWP42LL/A MWP52LL/A MWP62LL/A MR9Q2 MR9R2 MR9T2 MR9U2 MR9V2 MV962 MV972 MV982 MV992 MV9A2 MWP62. 【Note】The tools are included. Double-sided tape is attached to the back of the battery, but NO battery installation instruction. The MBP battery is difficult to disassemble, we suggest you search for related installation videos or find a technician for help.
BenQ RE8604 86” 4K UHD Interactive Flat Panel is a large interactive display designed for classrooms, meeting rooms, and training environments. It supports touch interaction, built-in Android system, and 4K resolution for collaboration and presentations. It features an 86-inch IPS panel with 3840 × 2160 4K UHD resolution. Therefore, it delivers sharp visuals and wide viewing angles for group use. In addition, it supports up to 40-point multi-touch input for writing and collaboration. Moreover, it runs an Android-based system (EDLA-supported depending on configuration). As a result, users can open apps, use whiteboard tools, and present content directly on the display without an external PC. The display includes anti-glare glass. Therefore, it remains readable in bright environments. In addition, it supports 4K 60Hz output for smooth visuals during presentations and video playback. Furthermore, it includes HDMI, USB, USB-C, LAN, and OPS slot connectivity. As a result, it works with laptops, external PCs, and modular computing systems. It also includes built-in speakers for classroom and meeting audio. Therefore, it supports presentations without extra sound systems. Finally, the BenQ RE8604 delivers a large 4K interactive workspace with multi-touch control and flexible connectivity for education and business use. Specifications: Display: 86-inch IPS panel with 3840×2160 4K UHD resolution Touch: Up to 40-point multi-touch support for collaboration System: Android-based interactive platform (EDLA support depending on model) Connectivity: HDMI, USB, USB-C, LAN, and OPS slot Display: Anti-glare screen with 4K 60Hz smooth output
The Riotouch 86″ Interactive Panel is designed to transform educational and professional environments with its cutting-edge features and user-friendly interface. This interactive flat panel offers a seamless blend of performance, connectivity, and intuitive design, making it an ideal choice for classrooms and conference rooms. Featuring a 86-inch 4K UHD display (3840 x 2160 resolution), the panel delivers crisp visuals and vibrant colors. Its 4mm anti-glare tempered glass ensures clear visibility from any angle, reducing eye strain during prolonged use. The panel supports up to 40-point multi-touch and 20-point multi-writing capabilities, allowing multiple users to interact simultaneously. This feature fosters collaborative learning and dynamic presentations, enhancing engagement and productivity. Powered by a quad-core Cortex-A55 processor and equipped with 4GB RAM and 32GB storage, the Riotouch panel ensures smooth performance. Its dual operating system support (Android and Windows) provides versatility, accommodating various software applications and user preferences. Connectivity is robust, with multiple ports including HDMI, USB 3.0, USB-C, VGA, and RJ45, facilitating easy integration with other devices. Built-in Wi-Fi and Bluetooth capabilities enable wireless connections, promoting a clutter-free workspace. The panel comes with integrated 2x15W front-facing speakers, delivering clear audio for multimedia presentations. Additionally, it includes a built-in 13MP 4K camera and microphone, supporting high-quality video conferencing and remote collaboration. Designed with user convenience in mind, the Riotouch panel features intuitive front controls for power, volume, and input selection. Its slim aluminum frame and wall-mountable design ensure it fits seamlessly into any environment. In summary, the Riotouch 86″ Interactive Panel combines high-resolution display, multi-touch interactivity, and versatile connectivity, making it a comprehensive solution for modern collaborative spaces. Specifications: Display : 86″ 4K UHD Touch Memory : 4GB Storage : 32GB OS : Android 11
The MSI Pro MP241X 24″ monitor delivers clear visuals and reliable performance for work and home use. It is built for everyday tasks, browsing, and media viewing. First, this monitor features a 24-inch Full HD display with vibrant colors and sharp details. As a result, your screen content looks crisp and easy to read. In addition, the MSI Pro MP241X 24″ offers a wide viewing angle for shared viewing. Therefore, multiple people can see clear images from different positions. The sleek and slim design makes this monitor look modern on any desk. Also, it takes up minimal space. Moreover, this monitor supports anti-flicker and reduced blue light technology. So, your eyes feel more comfortable during long sessions. Because it uses HDMI and VGA inputs, it connects easily to many devices. Thus, setup stays simple with laptops and desktops. The MSI Pro MP241X 24″ provides consistent performance for work apps and video watching. This makes everyday computing smooth and enjoyable. Furthermore, the stand offers tilt adjustment for better viewing angles. So, you can find the most comfortable position for your eyes. Compared to lower-resolution screens, this Full HD panel shows clearer details. Therefore, text and graphics look sharper and more accurate. It works well for office tasks, video streaming, and school work. Thus, it fits many daily needs. Installation is fast and beginner-friendly with plug-and-play support. As a result, you can start using it right away. The MSI Pro MP241X 24″ also supports stable refresh performance for smoother visuals. This improves motion during videos and general use. Also, the slim bezels help reduce distraction and provide a clean look. Therefore, your workspace stays neat and focused. In conclusion, this monitor offers clear visuals, comfort features, and easy connectivity. Overall, it is a strong choice for work, school, or entertainment. If you want a reliable and sharp 24″ screen, this model is worth choosing. Specifications: Display: 24-inch VA panel, Full HD (1920×1080), 16:9 aspect ratio. Performance: 75Hz refresh rate, 4ms (GTG) response time, 1000:1/3000:1 contrast Connectivity: HDMI™ 1.4b & D-Sub (VGA) ports for versatile device connection
Specifications : Display Diagonal Viewing Size 86.27 cm 34.14 inches Preset Display Area (H x V) 799.80 mm x 344.80 mm 31.49″ x 13.18″ 267773.04 sq-mm (415.01 sq-inches) Panel Type In-Plane switching Technology Display Screen Coating Antiglare with hard-coating 3H Maximum Preset Resolution 3440 x 1440 at 60Hz Viewing Angles 178° vertical / 178° horizontal Pixel Pitch 0.233 mm x 0.233 mm Pixel Per Inch (PPI) 109 Contrast Ratio 1,000 to 1 (typical) Aspect Ratio 21:9 Backlight Technology LED edgelight system Brightness 300 cd/m² (typical) Response time 8 ms for NORMAL mode 5 ms for FAST mode Adjustability Height adjustable (115 mm), Tilt (-5° to 21°) Swivel (-30° to 30°) Pivot (N/A) PbP / PiP PbP (Yes) PiP (Yes) Daisy Chain Availability No Dell Display Manager Compatibility Yes, Easy Arrange and other key features Remote Asset Management Yes, via Dell Command Monitor Specifications – Service / Support Details 3-Year Advanced Exchange Service and Limited Hardware Warranty Color Support Color Gamut (typical): 99.9% sRGB, CIE1976 (90%), CIE1931 (75%) Color Depth: 1.074 Billion colors Color Calibration Accurancy Delta E < 3 (average) Color Calibration with X-rite colorimeter No Built-in Devices USB 3.0 super-speed hub (with 2 x USB 3.0 upstream port) 4 x USB 3.0 downstream ports Security Security lock slot (cable lock sold separately) Anti-theft stand lock slot (to panel) Compliant Standards BFR/PVC-free (Halogen-free) excluding external cables Meets NFPA 99 leakage current requirements Arsenic-Free glass and Mercury-Free for the panel only Product Safety, EMC and Environmental Datasheets Dell Regulatory Compliance Home Page Dell and the Environment Flat Panel Mount Interface VESA (100 mm) Audio Output 1 x Audio line-out Connectivity 2 x HDMI 2.0 (HDCP 2.2) 1 x DP 1.2 (HDCP 2.2) 2 x USB 3.0 Upstream port 2 x USB 3.0 Downstream port (side) 2 x USB 3.0 Downstream port (bottom) 1 x USB Type-C (DisplayPort DP1.2 Alternate Mode, Power Delivery up to 90W (Typical), and USB 2.0) Dimensions & Weight Height with stand (Compressed ~ Extended) 417.0 mm ~ 532.0 mm 16.42″ ~ 20.94″ Width 813.6 mm 32.03″ Depth 226.4 mm 8.91″ Height without stand 363.7 mm 14.32″ Width without stand 813.6 mm 32.03″ Depth without stand 58.4 mm 2.30″ Weight (panel only – for VESA mount) 8.2 kg 18.07 lb Weight (with packaging) 16.0 kg 35.27 lb Power Voltage Required 100 VAC to 240 VAC / 50 Hz or 60 Hz + 3 Hz / 3 A (typical) Power Consumption (Operational) 54 W (typical) 250 W (maximum)** Power Consumption Stand by / Sleep Less than 0.5W **Maximum power consumption with max luminance, and USB active. Environmental Operating Conditions Temperature Range Operating: 0°C to 40°C (32°F to 104°F) Non-operating: –20°C to 60°C (–4°F to 140°F) Humidity Range Operating: 10% to 80% (non-condensing) Non-Operating: 5% to 90% (non-condensing) Altitude Operating: 5,000 m (16,404 ft) max Non-Operating: 12,192 m (40,000 ft) max In The Box Monitor, Stand Riser, Stand Base 1 x Power cable 1 X DP Cable (DP to DP) 1 X USB Type-C Cable (C to C) 1 x HDMI Cable 1 x USB 3.0 upstream cable Quick setup guide Safety, Environmental, and Regulatory Information Factory Calibration Report 1 Year Warranty manufacturer link
The Cudy WR1300 AC1200 Router delivers fast and stable internet with dual-band WiFi speeds up to 1200Mbps. Designed for home and office use, it features Gigabit ports for high-speed wired connections and reliable coverage for streaming, gaming, and everyday browsing. AC1200 Dual Band WiFi – Combined speeds of up to 1200Mbps (300Mbps on 2.4GHz + 867Mbps on 5GHz) for smooth streaming and online gaming. Gigabit Ethernet Ports – Ultra-fast LAN/WAN ports ensure maximum wired performance for PCs, consoles, and smart TVs. Wide Coverage – Equipped with high-gain antennas to provide strong and stable WiFi signal throughout your home or office. Multiple Operating Modes – Supports Router, Access Point, and Repeater modes for flexible network setup. Easy Setup & Management – Simple web interface for quick installation and control. Secure Connection – Advanced wireless security with WPA/WPA2 encryption to keep your network safe. 1 × Gigabit WAN Port 4 × Gigabit LAN Ports Wi-Fi 2.4GHz & 5GHz Dual Band Ethernet (RJ45) Wireless Security (WPA/WPA2)
The ViewSonic VA2450-H-12 24″ FHD 100Hz Monitor offers smooth visuals for work, entertainment, and gaming. It delivers sharp Full HD clarity with bright colors. The screen shows clean images that make videos and documents look better. This helps you enjoy a more comfortable viewing experience. Moreover, the ViewSonic VA2450-H-12 24″ FHD 100Hz Monitor features a fast 100Hz refresh rate. This reduces motion blur during fast scenes. It makes gaming smoother and more responsive. It also improves scrolling and general use. In addition, the monitor includes HDMI and VGA ports. These connections make setup quick and simple. You can use the monitor with laptops, PCs, and media devices. This offers strong flexibility for daily tasks. Furthermore, the ViewSonic VA2450-H-12 24″ FHD 100Hz Monitor has an eye-care design. It includes flicker-free technology to reduce strain. The blue light filter helps protect your eyes during long sessions. This makes the monitor ideal for work and study. Also, the slim frame design gives the monitor a modern look. It saves space on your desk and improves your workspace. The clean edges make multi-monitor setups easy and seamless. This helps create a professional environment. The stand on the ViewSonic VA2450-H-12 24″ FHD 100Hz Monitor offers stable support. You can tilt the screen for better viewing comfort. This helps you find a position that suits your posture. It improves your daily productivity. Overall, the ViewSonic VA2450-H-12 24″ FHD 100Hz Monitor provides clear visuals, smooth motion, and strong comfort. It works well for gaming, work, streaming, and general use. It is a reliable choice for users who want performance and simplicity. Specifications: Display : 24″ IPS Resolution : 1920×1080 Refresh Rate : 100Hz Response Time : 5ms
In the realm of monitors, the ViewSonic VG2748 stands out as a powerhouse, offering exceptional visual clarity and a range of features to boost productivity for an enhanced viewing journey. Transitioning to its key features, the VG2748 excels in providing crisp and detailed visuals. This monitor is designed to deliver sharp images and vibrant colors, ensuring a visually engaging experience for work, presentations, or creative tasks. Moreover, this display impresses with its sleek and professional design. The ViewSonic VG2748 not only complements your workspace but also ensures a slim profile and ergonomic stand, allowing for customized and comfortable viewing. In addition to its functionality, the VG2748 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 work environments. Furthermore, ViewSonic’s commitment to user satisfaction is evident in the VG2748’s advanced ergonomic features and eye-care technology. It’s a reliable companion for extended work sessions, offering both visual excellence and comfort. In conclusion, the ViewSonic VG2748 redefines productivity, combining high-quality visuals, professional design, and user-friendly features. Elevate your work experience effortlessly with the VG2748 – your partner in a seamless and efficient viewing journey! Specification vDisplay Manager SuperClear IPS 178˚/ 178˚ Low Energy Consumption Dual Speakers Refresh Rate : 60Hz Flicker-Free Blue Light Filter ViewMode : Game/Movie/Web/Text/Mono/Mac Ports : 4 USB-A |1 VGA | 1 HDMI | 1 Display Port
Original replacement touchpad for MacBook Air A2442, available in Silver and Space Gray. Perfect for fixing unresponsive or damaged trackpads and restoring smooth cursor control and gesture functionality. The Original MacBook Air A2442 Touchpad is a genuine replacement part designed to restore full trackpad performance and functionality. If your MacBook Air trackpad is not clicking, not responding, or physically damaged, this original touchpad provides a reliable solution with smooth tracking and accurate gesture support. Available in Silver and Space Gray, it matches the original laptop finish for a clean professional repair. Original / Genuine Touchpad for MacBook Air A2442 Available in Silver and Space Gray Restores smooth cursor control and multi-touch gestures Reliable clicking and accurate tracking performance Perfect for repair and replacement of damaged trackpads High-quality build for long-term use ✔ MacBook Air 13-inch (2021 / 2022) A2442 Compatible with MacBook Air A2442 models only. Please confirm the model number on the bottom cover before purchase to ensure a correct fit.
LENOVO 20V/3.25A USB PIN Laptop Charger for Lenovo Thinkpad Compatible Part NO.: 45N0236, 45N0237, 45N0238, 45N0239 0B46994, 0B46995, 0B46996, 0B46997, 0B46997, 0B46998, 0B469990B47000, 0B47001, 0B47002, 0B47003, 0B47004, 0B47005, 0B47006
Samsung Monitor LS32BG850 32″Neo G8 4K Curved UHD Display Screen Size (Class)32 Flat / CurvedCurved Active Display Size (HxV) (mm)697.306 x 392.234 Screen Curvature1000R Aspect Ratio16:9 Panel TypeVA Brightness (Typical)350 cd/㎡ Peak Brightness (Typical)1000 cd/㎡ Brightness (Min)300 cd/㎡ Contrast Ratio Static1,000,000:1 Dynamic Contrast RatioMega DCR HDR(High Dynamic Range)Quantum HDR 2000 HDR10+Yes Mini LED Local DimmingYes (1,196 zones) HDR10+ GamingYes Resolution3,840 x 2,160 Response Time1ms(GTG) Viewing Angle (H/V)178°/178° Color SupportedMax 1B Color Gamut (DCI Coverage)95% (Typ) Refresh RateMax 240Hz Specifications: Specifications Screen Size (Class)32 Flat / CurvedCurved Active Display Size (HxV) (mm)697.306 x 392.234 Screen Curvature1000R Aspect Ratio16:9 Panel TypeVA Brightness (Typical)350 cd/㎡ Peak Brightness (Typical)1000 cd/㎡ Brightness (Min)300 cd/㎡ Contrast Ratio Static1,000,000:1 3 year warranty
The ViewSonic VA2708-2K-MHD is a 27-inch monitor featuring a SuperClear IPS panel with QHD resolution (2560 × 1440). The higher resolution provides more screen space and sharper image quality compared to standard Full HD displays, making it suitable for office work, content consumption, and everyday productivity. The monitor supports a refresh rate of up to 100Hz. As a result, scrolling, video playback, and general desktop use appear smoother than on traditional 60Hz displays. In addition, the display offers a 1ms MPRT response time to help reduce perceived motion blur. The IPS panel provides wide 178° horizontal and vertical viewing angles. Therefore, colors and brightness remain more consistent when viewed from different positions. ViewSonic includes built-in stereo speakers for basic audio playback. This eliminates the need for external speakers in many office and home environments. Connectivity includes HDMI, DisplayPort, and VGA inputs, allowing compatibility with modern and legacy devices. The monitor also supports VESA wall mounting for flexible installation options. The VA2708-2K-MHD focuses on sharp QHD image quality, smooth 100Hz performance, and versatile connectivity for everyday computing tasks. Specifications: 2K QHD 2560 X 1440 resolution SuperClear® IPS panel 100Hz Variable refresh rate delivers fluid visuals 1ms (MPRT) response time for precision HDR10 Delivers Stellar Contrast and Color Accuracy
Acer V247YBIV 24 inch Monitor SIZE 1920 x 1080 BRAND Acer DIMENSION 24″ SPEED 4ms MISC Wide 3 Years Warranty
MARSRIVA Smart Mini DC UPS KP2 Series | 18 Watts 10000mAh | 0ms AC to DC Transfer | Flame Retardant | Wall Mount Slots | 1 x Passive PoE, 2 x DC and 1 x USB Output Ports | KP2 BLACK Keep Wi-Fi Power On Output:18W (Max.) or 30W (Max.) ● With 1 * Passive PoE, 2 * DC and 1 * USB output ports, DC UPS can power up multiple devices simultaneously. ● AC to DC 0ms transfer technology keeps your devices working when electricity is ON/OFF shifting. ● With wall-mount slots on the back, DC UPS can be mounted on the wall easily. ● Air cooling system provides maximum heat dissipation, ensuring the long-term stability of UPS. ● V-0 flame retardant product housing secures you and your property. ● 16000mAh high-capacity battery (KP2 Plus, KP2 Ultra) provides longer backup time. ● 30W high-power output (KP2 Pro, KP2 Ultra) provides better compatibility.
AOC 24G4E 24-inch 180Hz gaming monitor delivers fast and responsive performance for competitive gaming. It focuses on smooth motion, low latency, and clear visual quality for everyday gameplay. Additionally, it features a 23.8-inch Fast IPS panel with Full HD resolution (1920 × 1080). This panel provides sharp detail and wide viewing angles, so it ensures consistent image quality in games and general use. Moreover, it supports a 180Hz refresh rate with 1ms GtG and 0.5ms MPRT response time. As a result, it delivers smooth motion and reduces blur during fast-paced action. The monitor includes Adaptive Sync and G-SYNC compatibility. Therefore, it reduces screen tearing and stuttering for stable gameplay performance. In addition, it supports HDR10 and low input lag mode. These features improve contrast and responsiveness during gaming sessions. Furthermore, it offers a three-sided frameless design with HDMI 2.0 and DisplayPort 1.4 connectivity. This makes it suitable for modern gaming setups and multi-monitor use. AOC 24G4E 24-inch 180Hz gaming monitor provides smooth performance, fast response, and essential competitive gaming features. Check out other option here! Specifications: 23.8-inch Fast IPS panel with Full HD 1920 × 1080 resolution 180Hz refresh rate for ultra-smooth gameplay 1ms GtG and 0.5ms MPRT response time Adaptive Sync and G-SYNC compatible support HDR10 with low input lag mode for better responsiveness
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
A durable and versatile pre-owned Lenovo ThinkPad T470 with 14" touchscreen, 6th Gen Core i5, 8GB RAM, and 256GB SSD—ideal for professionals who need reliability, touch functionality, and trusted ThinkPad performance.
The Lenovo Legion 24″ 320Hz FHD Gaming Monitor is designed for competitive gamers seeking ultra-smooth visuals. First, its 1920 × 1080 Full HD resolution delivers sharp and clear images for fast-paced games. The 320Hz refresh rate ensures fluid motion and reduced screen tearing. In addition, the 0.5ms response time minimizes ghosting and motion blur. Moreover, adaptive sync technology enhances smooth gameplay across various titles. The sleek slim-bezel design fits seamlessly into any gaming setup. Furthermore, its ergonomic stand allows height and tilt adjustments for comfortable long gaming sessions. Finally, the Lenovo Legion 24″ 320Hz FHD Gaming Monitor combines high refresh performance, fast response, and adaptive sync in one competitive display. Overall, it is ideal for esports players and serious gaming enthusiasts. Specifications: 24″ Full HD 1920 × 1080 resolution 320Hz ultra-fast refresh rate 0.5ms response time for minimal ghosting Adaptive sync for smooth gameplay Ergonomic stand with height and tilt adjustment
