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Dell latitude e5450
Core i5/5th gen/8gb ram/256 ssd/14' display...


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Lenovo ThinkPad T450
Core i5/5th gen/8gb ram/256 gb ssd/14" display...


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HP EliteBook 840 G5 Intel Core i5 8th Gen - (8 GB/256 GB SSD/Windows 10 Pro EliteBook 840 G5 Business Laptop  (14 inch, Silver)

HP EliteBook 840 G6 Intel Core i5 8th Gen - (8 GB/256 GB SSD/Windows 10 Pro EliteBook 840 G6 Business Laptop  (14 inch, Silver)

Lenovo ThinkPad T450 Overview

• Processor: Intel Core i5 (5th Gen, typically 5300U or 5200U)

• RAM: 8GB or 16GB DDR3L

• Storage: 256GB or 512GB SSD

• Display: 14" HD (1366x768) or HD+ (1600x900); some models offer touchscreen

• Graphics: Intel HD Graphics 5500

Dell latitude 7470
Core i5/6th gen/8gb ram/256 ssd/14' display...


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lenovo thinkpad x240
Core i5/4th gen/8gb ram/256 ssd/14' display...


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HP elitebook 820 g3
Core i5/6th gen/8gb ram/256 gb ssd/12.5" display...


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Dell latitude 7240
Core i5/4th gen/8gb ram/256 gb ssd/12.5" display...


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Dell 5520 Laptop
Core i5/2nd gen/8gb ram/500gb hdd/14' display...


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The Lenovo ThinkPad L412 is a business laptop known for its reliability and durability. Here’s what to look for when considering a second-hand Lenovo L412:

1. Condition: Check for physical damage such as scratches, dents, or cracks. Ensure the screen is clear of dead pixels and significant scratches. Test all ports, buttons, and hinges to make sure they are functioning properly.

2. Specifications: The L412 typically comes with Intel Core i3 or i5 processors, 4GB to 8GB of RAM, and HDD or SSD storage options. Verify the exact configuration and ensure it meets your performance needs.

3. Battery Health: Since batteries can degrade over time, check the battery’s condition and how well it holds a charge. You may need to replace the battery if its performance is lacking.

4. Keyboard and Trackpad: Test the keyboard and trackpad to ensure they are in good working order. The ThinkPad keyboards are known for their durability, but make sure there are no unresponsive keys.

5. Operating System and Software: Confirm that the operating system is properly installed and that the laptop is free of malware. Check that any pre-installed software is legitimate and updated.

6. Previous Usage: If possible, find out how the laptop was used previously. Understanding its history can give you insight into its condition and potential issues.

7. Price: Compare prices with other second-hand models to ensure you’re getting a fair deal. The price should be appropriate for the laptop’s age, condition, and market value.

Warranty: Always check the warranty period and what's covered. A longer warranty can offer added security.

Return Policy: Ensure the seller has a return policy in case the laptop doesn't meet expectations.

May come with genuine Windows OS preinstalled.

Often includes a warranty (usually 90 days to 1 year).

• Model: Lenovo ThinkCentre M91p

• Form Factors: Available in Tower, Small Form Factor (SFF), and Ultra-Small Form Factor (USFF)

• Design: Professional black chassis suitable for office environments

• Target Audience: Designed for business and enterprise users

⚙️ Core Specifications

• Processor Options:

  • Intel Core i5-2400 (3.1 GHz, Quad-Core)

  • Intel Core i7-2600 (3.4 GHz, Quad-Core)

• Memory:

  • 4GB DDR3 RAM (expandable up to 16GB)

• Storage:

  • 500GB 7200rpm SATA Hard Drive

• Graphics:

  • Integrated Intel HD Graphics

• Optical Drive:

  • SuperMulti DVD Burner

• Operating System:

  • Windows 7 Professional (64-bit)B&H Photo Video+2Currys Business+2B&H Photo Video+2Silent PC Review+5B&H Photo Video+5B&H Photo Video+5B&H Photo Video+3B&H Photo Video+3B&H Photo Video+3Silent PC Review+4B&H Photo Video+4B&H Photo Video+4

🔌 Connectivity & Ports

• USB Ports: 8 x USB 2.0 (2 front, 6 rear)

• Video Outputs: 1 x VGA, 1 x DisplayPort

• Audio Ports: Microphone-in, Line-in, Headphone-out

• Network: Gigabit Ethernet (RJ-45)

• Expansion Slots:

  • 1 x PCI Express x16

  • 1 x PCI Express x1

  • 2 x PCIPCWorld+3B&H Photo Video+3B&H Photo Video+3Silent PC Review

📏 Dimensions & Weight

• Dimensions (SFF): 13.3 x 3.9 x 14.5 inches (33.7 x 9.9 x 36.9 cm)

• Weight: Approximately 16.5 lbs (7.5 kg)B&H Photo Video+1B&H Photo Video+1

✅ Key Features

• Performance: Equipped with Intel's 2nd Generation Core processors for reliable multitasking

• Security: Features like BIOS-level security and TPM (Trusted Platform Module) support

• Manageability: Supports Intel vPro technology for remote management

• Energy Efficiency: ENERGY STAR® compliant for energy savings

Ensure the seller offers a warranty period and a return policy to safeguard your purchase.

The Dell Latitude E7250 is a compact, business-oriented laptop known for its portability and solid build quality. When considering a second-hand Dell Latitude E7250, here are some factors to evaluate:

1. Condition: Examine the laptop for any physical damage like scratches, dents, or cracks. Check that all ports, buttons, and hinges are functioning properly. Make sure the screen is free from dead pixels and significant scratches.

2. Specifications: The E7250 typically comes with Intel Core i5 or i7 processors, 8GB of RAM, and SSD storage options. Ensure the configuration matches your needs and verify the specific specs of the unit you’re considering.

3. Battery Health: The battery may have degraded over time, so check its health and how well it holds a charge. Replacing the battery might be necessary if it no longer performs adequately.

4. Keyboard and Trackpad: Test the keyboard and trackpad to ensure they are responsive and in good working order. The E7250’s keyboard is generally well-regarded, so check for any keys that may not function properly.

5. Operating System and Software: Verify that the operating system is properly installed and that the laptop is free of malware. Ensure that any pre-installed software is legitimate and up-to-date.

6. Previous Usage: If possible, find out how the laptop was used before. Business laptops like the Latitude E7250 often have a maintenance history, which can be a good indicator of how well it was cared for.

7. Price: Compare prices with other second-hand models to ensure you’re getting a fair deal. Given its age and condition, the price should reflect its market value.

The HP ProBook 640 G5 is a solid business laptop with a focus on performance and durability. Here’s what you should know about a refurbished model with an Intel Core i5 (8th Gen), 8GB of RAM, and a 256GB SSD:

1. Condition: Ensure the laptop is in good physical and functional condition. Look for any signs of wear or damage and test all the components to confirm they work properly.

2. Specifications: With an Intel Core i5 8th Gen processor, 8GB of RAM, and a 256GB SSD, this configuration offers good performance for most business tasks and everyday use. The SSD will help with fast boot times and quick access to files.

3. Warranty and Support: Check if there’s a warranty or return policy for the refurbished laptop. A warranty can provide peace of mind in case any issues arise.

4. Battery Health: Verify the battery’s condition, as it may not hold a charge as well as a new one. Replacement batteries are often available if needed.

5. Previous Usage: If possible, find out how the laptop was used before. Business laptops like the ProBook 640 G5 often have a rigorous maintenance history.

6. Pricing: Compare prices from different sellers to ensure you're getting a fair deal on the refurbished model.

The Dell Latitude E5570 is a robust and versatile laptop designed for business use. It offers a larger screen and a full-sized keyboard, making it suitable for extended work sessions. When considering a refurbished Dell Latitude E5570, here are some important factors to keep in mind:

1. Condition: Inspect the laptop for physical damage and ensure all functions work correctly. Refurbished units should be thoroughly tested.

2. Specifications: Typical configurations include Intel Core i5 or i7 processors, 8GB or more of RAM, and various SSD or HDD options. Make sure the specifications align with your needs.

3. Warranty and Support: Check if the refurbished laptop comes with any warranty or support options. This can be crucial for troubleshooting any issues that arise.

4. Battery Health: Since batteries can degrade over time, it's important to check the battery's health and longevity.

5. Previous Usage: Understanding how the laptop was previously used can give insights into its condition and reliability.

6. Pricing: Compare prices from different sellers to ensure you’re getting a good deal for a refurbished model.

The Lenovo E4030 is a budget-friendly laptop designed for basic tasks and general use. When considering a second-hand Lenovo E4030, here are a few key points to check:

1. Condition: Inspect the laptop thoroughly for physical damage, such as scratches or dents. Check that all ports, buttons, and features are functioning properly.

2. Specifications: Verify the specifications to ensure they meet your needs. Typical configurations for the E4030 might include basic Intel processors, modest amounts of RAM, and HDD storage. Make sure the laptop has the required performance for your tasks.

3. Battery Health: Battery performance can degrade over time, so check the battery’s health and how well it holds a charge.

4. Operating System and Software: Confirm that the operating system is properly installed and that the laptop is free of malware. Ensure that any pre-installed software is legitimate and not expired.

5. Previous Usage: If possible, find out how the laptop was used previously. This can give you an idea of its condition and potential issues.

The Dell Latitude 7130-T07G is a model from Dell’s Latitude series, often recognized for its durability and business-oriented features. When considering a second-hand Dell Latitude 7130-T07G, here are some important factors to check:

1. Condition:

   • Physical Damage: Look for any physical damage such as scratches, dents, or cracks on the laptop’s body. Ensure the screen is clear of dead pixels and major scratches.
   • Ports and Hinges: Check that all ports (USB, HDMI, etc.) are functioning correctly and that the hinges operate smoothly without any issues.

2. Specifications:

   • Processor: Confirm the processor type and speed. Common processors for this model are Intel Core i5 or i7. Ensure the processor meets your performance needs.
   • RAM: Verify the amount of RAM installed. Typical configurations range from 4GB to 8GB, but check if the laptop meets your requirements.
   • Storage: Check the type and capacity of storage. SSDs are preferable for better performance, but HDDs might be present in older models. Ensure the storage is sufficient for your needs.

3. Battery Health:

   • Performance: Test the battery to see how well it holds a charge. Since batteries degrade over time, you might need to replace it if it no longer performs adequately.

4. Keyboard and Trackpad:

   • Functionality: Test the keyboard and trackpad for responsiveness and proper function. Ensure there are no unresponsive keys and that the trackpad works smoothly.

5. Operating System and Software:

   • Installation: Ensure the operating system is installed correctly and that the laptop is free from malware. Verify that any pre-installed software is legitimate and up-to-date.

6. Previous Usage:

   • History: If possible, learn about the laptop’s previous usage. Business laptops often have a documented maintenance history, which can be helpful.

7. Price:

   • Comparison: Compare the price with other second-hand models to ensure you’re getting a fair deal. The price should reflect the laptop’s age, condition, and market value.

The Dell Precision 5520 is a high-performance laptop designed for professional use, particularly in fields that require significant computational power and graphics capabilities. Here’s what to consider when evaluating a second-hand Dell Precision 5520:

1. Condition:

   • Physical Damage: Inspect the laptop for any physical damage, such as scratches, dents, or cracks on the body. Ensure the screen is clear of dead pixels and major scratches. Check that all ports, buttons, and hinges are functioning correctly.
   • Keyboard and Trackpad: Test the keyboard and trackpad for any issues. Ensure that all keys are responsive and that the trackpad functions smoothly.

2. Specifications:

   • Processor: The Precision 5520 typically features Intel Core i5 or i7 processors, or even Xeon processors in some configurations. Confirm the processor type and speed to ensure it meets your performance requirements.
   • RAM: It usually comes with 8GB to 32GB of RAM. Verify the installed amount and ensure it meets your needs for multitasking and performance.
   • Storage: Check for SSD storage, which offers better performance than HDDs. Verify the storage capacity and confirm that it is sufficient for your needs.
   • Graphics: The Precision 5520 often includes dedicated NVIDIA Quadro graphics, which is ideal for graphics-intensive tasks. Verify the graphics card model and its condition.

3. Battery Health:

   • Performance: Check how well the battery holds a charge. Batteries in older laptops may have degraded, so be prepared to replace it if necessary.

4. Operating System and Software:

   • Installation: Ensure that the operating system is properly installed and that the laptop is free of malware. Confirm that any pre-installed software is legitimate and updated.

Device Overview

• Name: Kalkitech Sync 2000-s6R1

• Type: Industrial Substation Protocol Gateway (not a general desktop computer)

• Purpose: Facilitates communication and protocol conversion in electrical substations and energy systems

⚙️ Technical Specifications

• Input Voltage: 24 VDC, 0.6A

• Default LAN IP: 192.168.0.121

• MAC Address: 00:25:97:00:06:D1

• Weight: Approx. 590 grams

• Construction: Compact industrial-grade metal casing

• Communication Interfaces: Serial, Ethernet, USB (varies by configuration)

• Protocols Supported: IEC 60870-5-101/104, DNP3, Modbus, and others (varies per use case)

The HP ProBook 440 G5 is a solid business laptop that balances performance with portability, featuring a 14.0-inch display and powered by Intel’s 8th generation processors. When evaluating a refurbished or used HP ProBook 440 G5 with an Intel Core i5 8th Gen processor, here’s what to consider:

1. Condition

• Physical Damage: Inspect the laptop for any signs of physical damage such as scratches, dents, or cracks. Make sure the screen is free of dead pixels and major scratches.
• Ports and Hinges: Check that all ports (USB, HDMI, etc.) are functioning properly. Ensure that the hinges are not loose and that the laptop opens and closes smoothly.

2. Specifications

• Processor: Verify the specific Intel Core i5 8th Gen model (e.g., i5-8250U) to ensure it meets your performance needs. The 8th Gen processors generally offer a good balance between power and efficiency.
• RAM: The 440 G5 typically comes with 8GB of RAM, but configurations can vary. Check the installed RAM and ensure it meets your needs for multitasking and performance.
• Storage: Confirm the type and capacity of the storage. The 440 G5 usually comes with SSDs, which are preferable for faster performance. Ensure the storage is adequate for your needs.
• Display: With a 14.0-inch display, check the resolution and quality. The ProBook 440 G5 commonly features a Full HD (1920x1080) display, which is good for most business tasks.

3. Battery Health

• Performance: Test the battery to see how well it holds a charge. Since batteries can degrade over time, you might need to replace it if it doesn’t hold a charge well.

4. Keyboard and Trackpad

• Functionality: Test the keyboard and trackpad for responsiveness and proper function. Ensure all keys work and that the trackpad is smooth and responsive.

5. Operating System and Software

• Installation: Ensure the operating system is installed correctly and that the laptop is free of malware. Verify that any pre-installed software is legitimate and up-to-date.

6. Previous Usage

• History: If possible, find out how the laptop was used previously. Business laptops like the ProBook 440 G5 often have a documented maintenance history, which can give you insights into its overall condition.

7. Price