Dell Pro Slim Plus (QBS1250) - Desktop - Core Ultra 9-285, RTX A400 (Cybist Renewed – Excellent)
Professionally renewed Tested, prepared and backed by our one-year warranty.
Professional capability. Clearly presented.
Business technology. Outstanding value.
Key specifications
- Department
- Computers & IT
- Manufacturer
- Dell
- Product type
- Desktop Computer
- Processor
- Core Ultra 9-285
- Graphics
- RTX A400
- Memory
- 16GB
- Storage
- 1TB SSD · NVMe SSD · PCIe Gen 4 x4
- Operating system
- Windows 11 Pro
- Condition
- Cybist Renewed – Excellent
The details, clearly presented
Full specifications
Review the principal configuration below. Where a product has selectable variants, the purchase controls above show the configuration currently selected.
- Department
- Computers & IT
- Manufacturer
- Dell
- Product type
- Desktop Computer
- Processor
- Core Ultra 9-285
- Graphics
- RTX A400
- Memory
- 16GB
- Storage
- 1TB SSD · NVMe SSD · PCIe Gen 4 x4
- Operating system
- Windows 11 Pro
- Condition
- Cybist Renewed – Excellent
- SKU
- 3002812AE-RENEWED
Product information
The Dell Pro Slim Plus QBS1250 SFF Workstation PC is designed for Business and Professional users who need strong performance, dedicated graphics and expansion flexibility in a compact Desktop format. This Dell Pro Slim system delivers Workstation capability without the space demands of a larger Tower, making it practical for offices, studios and technical workspaces.
Processing is powered by an Intel Core Ultra 9-285 processor with 24 cores, running at 2.5 GHz power saving mode and up to 5.6 GHz maximum performance mode. This gives the Dell Desktop responsive PC performance for demanding Business applications, multitasking, data handling and Professional productivity.
Graphics workloads are supported by an NVIDIA RTX A400 4GB GDDR6, providing dedicated visual performance for multi-display productivity, design review, office graphics and compatible Workstation applications. AI-ready support is included through an NPU with up to 13 TOPS, helping accelerate compatible local AI tasks within supported workflows.
Storage and memory are configured for fast daily operation with 1TB PCIe Gen 4.0x4 NVMe storage and 16GB DDR5 memory. The Dell Pro Slim Plus also supports up to triple M.2 PCIe storage, giving the PC room to expand storage capacity for project files, applications, datasets and Business archives.
Display output is designed for wide Professional workspaces, with support for up to four 5K monitors through 4 x Mini DisplayPort 1.4a. This allows the compact Dell Workstation to drive multiple high-resolution screens for dashboards, design tools, spreadsheets, monitoring panels and content workflows.
Connectivity includes Gigabit Ethernet and WiFi 6 & BT 5.2for flexible and stable wired networking across office and Professional environments. Built in a Small Form Factor with 8.4L size and supplied with Windows 11 Pro, the Dell Pro Slim Plus QBS1250 provides a compact Business Desktop platform with Workstation performance for modern PC deployments.
Clear grading. Functional confidence.
Know exactly what you’re buying
Every Cybist Renewed product is inspected, tested and professionally prepared. The grade describes its cosmetic appearance; it does not reduce the product’s essential functionality. Any product-specific limitations will be stated in the description.
Condition shown for this product: Cybist Renewed – Excellent. Minimal signs of previous use. Fully functional, professionally prepared and backed by our one-year warranty.
The applicable Cybist grade is displayed on the product page before you order.
Core functions, ports, connectivity, storage and relevant product features are checked.
Rechargeable batteries are tested for correct operation and replaced where they do not meet our preparation standard. Runtime varies by product and use.
Included unless the product page expressly states otherwise.
Warranty information
What the warranty means
If a problem develops, contact Cybist before arranging a repair or return so we can assess the fault and confirm the appropriate next step. Depending on the circumstances, this may include troubleshooting, repair, replacement or another remedy under the applicable terms.
This summary does not affect your statutory rights. Full warranty terms and any product-specific terms apply.
Carefully packed. Clearly explained.
Delivery and returns without uncertainty
Orders are normally processed within one business day and same-day dispatch is attempted where possible. Order by 2pm for the best chance of next-working-day delivery. Timing remains subject to stock location, product preparation, weekends, bank holidays and carrier circumstances.
Our team prepares orders promptly and confirms any exceptional delay.
Technology is protected appropriately for its size, weight and journey.
DPD, FedEx or Royal Mail is selected as appropriate for the order and destination.
Eligible returns can be requested within 30 days of delivery, subject to our returns policy.
If your order arrives damaged
Keep the product and all packaging, take clear photographs and contact us as soon as possible. Please do not dispose of packaging or return the item until our team has provided instructions.
If you change your mind
Contact us before returning anything and include the accessories and packaging supplied. Responsibilities and any charges depend on the reason for return, the customer type and the returns policy.
If a fault develops
Have your order number and a clear description of the issue ready. We may complete a remote diagnostic check before confirming the most appropriate next step.
Consumer cancellation and statutory rights are not affected. Business purchases may also be subject to agreed quotation, purchase-order or account terms.
Practical technology procurement
Buying for a business or organisation?
Whether you need one workstation or a consistent multi-unit rollout, Cybist can help you choose commercially sensible technology. Our team brings more than 30 years of practical experience to specification, configuration and ongoing support.
Practical advice based on users, workloads, compatibility and budget.
Help aligning memory, storage, operating systems and accessories across a requirement.
Formal quotations, VAT invoicing, volume pricing and purchase orders for approved accounts.
Support from preparation and rollout through recovery, reuse and secure data erasure.
Professionally renewed technology can extend budgets without compromising the clarity of the specification. We focus on the right solution for the requirement—not simply the lowest headline price.
- ISO 9001 certified processes
- Secure data erasure
- One-year warranty
- Real UK support
- Volume purchasing
- Product lifecycle support
Why this is a smart business buy
Confidence in the condition
What Cybist Renewed – Excellent means
Minimal signs of previous use. Fully functional, professionally prepared and backed by our one-year warranty.

A defined process. A dependable result.
The Cybist Renewed Standard
Every device is prepared around quality, security and useful life.
- 01Carefully selectedQuality business technology from trusted partners.
- 02Securely data-erasedCertified erasure protects your information.
- 03Tested, upgraded and preparedChecked to strict standards and professionally refreshed.
- 04Warranted and supportedOne-year warranty and real UK support.

Human help when you need it
Need help choosing the right computer?
Our team can help with compatibility, configuration, condition and support.
0203 997 7264
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