HP All-in-One 3420 Pro 20" HD+ (1600x900) AIO Computer - Core i3 3.30GHz, 8GB RAM, 128GB SSD, WebCam, Win 10 Pro, USB Keyboard & Mouse

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  • Refurbished Grade A HP Pro 3420 All-in-One PC
  • Intel® Core™ i3-2120 Processor, 3M Cache, 3.30 GHz
  • 8 GB Memory
  • 128 GB SSD
  • 20-inch diagonal widescreen HD+ (900p) WLED anti-glare display
  • 1600 x 900 resolution (16:9)
  • Intel HD Graphics 2000
  • Integrated Realtek Gigabit Ethernet
  • Two (2) USB 2.0 (left); Four (4) USB 2.0 (rear)
  • One (1) stereo audio headphone jack (left)
  • One (1) Microphone jack (left)
  • One (1) Stereo audio line out (rear)
  • One (1) Power connector (rear)
  • One (1) RJ-45 Ethernet (rear)
  • 6-in-1 Media Card reader
  • HP Slim Tray-load SuperMulti DVD Writer
  • USB Wired Keyboard and Mouse
  • Windows 10 Professional
  • One year Hardware Warranty

HP Pro 3420 All-in-One Business PC is completely new and powerful enough to handle all computing tasks.

A full-function, great looking PC with a heritage of quality and reliability.

The space-saving all-in-one form factor integrates desktop computer, 20 inch diagonal HD+ WLED backlit monitor, webcam, and dual microphone array to help make collaboration simpler.

A complete all-in-one design with Business PC performance and all-around versatility- perfect for everyday business.

Business class.
With its sleek, minimalist industrial design this PC is sophistication personified. The HP Pro 3420 All-inOne Business PC has a clean look that will stay current for years to come. Work comfortably with the 20” diagonal HD1 LCD display that tilts to allow for optimum placement, helping you create an ideal workspace. The space-saving design frees up your
desktop space for an uncluttered computing experience. Just unpack, place, plug in, and get to work. No need to hassle with connecting multiple pieces of hardware.

Stylishly flexible.
The commercial design is ready for the most demanding enterprise environments and makes a great PC for everyday computing on a desk, in the classroom, or in customer-facing areas.

Its high-gloss finish and conveniently positioned ports and connectors make the HP Pro 3420 perfect for small spaces. Included on the slim chassis are side and rear audio ports and an integrated 6-in-1 Media Card Reader conveniently
located to make it easier to load and transfer media. The updated, professional design will stand out without standing in the way.

Equipped to collaborate
It’s easy to collaborate with colleagues around the globe. We make face-to-face meetings simpler with the built-in webcam and microphone array. Coworkers can join you in front of the 20“ diagonal HD1 widescreen LED backlit display and enjoy high quality sound from the integrated premium stereo speakers. The webcam3 also captures photos and
videos clips to review and share.

Grade A - Units are in overall good cosmetic condition, fully tested and 100% functional.

Please note that stock images are used.


Assigning the correct condition to each product is the first step toward providing a great customer experience. All units regardless of the condition are Fully Tested and 100% Functional. Any exceptions to any condition description will be mentioned on the product detail page. 

Grade A 

Minimal to no-wear. A pre-owned product that was inspected and tested to work and look like new. The product has minimal to no signs of wear, no visible cosmetic imperfections when held 14 inches away, and may arrive in a brown or white box with relevant accessories that may be generic.

Grade B

Signs of normal usage. Product will show Wear from previous use, but it remains in good condition and functions properly. Units might have scratches, dents, bents, cracks as well as minor screen imperfections.

Grade C

Signs of heavy usage but continues to function properly. Signs of wear can include moderate to major aesthetic issues such as scratches, dents, worn corners, screen spots or other imperfections. The item may have identifying markings on it or show other signs of previous use. More specifics might be noted in description.

ATTENTION: If you purchased a Coretek product from an authorized distributor and not from the Coretek Online Shop, your purchase is subject to the particular warranty that accompanies the product. That warranty may differ from the warranty posted on this Site. If you purchased a Coretek product from the Coretek Online Shop, the following warranties and policies apply.


I. Money-back Guarantee Policy

Should you not be completely satisfied with your online store purchase, you may return your purchase within 30 days from your invoice date.
Please note that in both instances, shipping costs are not refunded. To return your Coretek product, send an email to support@coretek.us (including your order number). Coretek will email you a Return Material Authorization (RMA) number. To receive a refund, the product must be returned to the Coretek warehouse within 14 calendar days of the issuance of the RMA. No returns will be accepted without a Return Authorization (RMA) Number. A 10% open box fee will be assessed on any opened package. In addition a restocking fee of 10% will be applied if the product is being retuned without valid reason as stated below.

It is your responsibility to ship your return prepaid and insured for the full purchase price by a carrier that offers package tracking, such as United States Postal Service registered mail, United Parcel Service (UPS), or Federal Express.
The Money-back Guarantee is also contingent upon the products being returned 100% complete and in like-new condition. All products must be packed in the original, unmarked packaging including any accessories, manual and documentation that was shipped with the product. Coretek may reject the return, or deduct costs associated with: missing parts, non-original packaging, abuse, misuse of the product or user negligence.

If you purchased the wrong product and would like to exchange it for another Coretek product, the same regulations as under “Returns” apply, except that we will only charge a 5% open box fee on any opened package. Price differences between the exchanged products will be assessed during the exchange and debited or credited accordingly.

II. Dead On Arrival (DOA) Product
A Coretek hardware product is considered DOA if it shows symptoms of hardware failure, preventing basic operability, upon its first use out of the box. If you believe that your product is DOA, please contact support@coretek.us within 10 calendar days of the invoice date.
If the product is deemed DOA by Coretek Technical Support within 10 calendar days of the invoice date, you are eligible to receive a replacement unit. If the product is deemed not DOA by Coretek Technical Support or if the product is deemed DOA more than 10 calendar days after the invoice date. Coretek’s limited product warranty will apply (see section below on Defective Items Limited Warranty).

Shipping will be arranged at Coretek’s expense for all products determined by the Coretek Technical Support Team to be DOA. Coretek reserves the right to test returned DOA product. If the condition of the product is misrepresented by the customer, Coretek may impose a $100 handling fee.

III. Defective Items Limited Warranty
Coretek offers a 365 Day Hardware warranty on new and refurbished products purchased online. The warranties are in effect from the invoice date. Software of any kind delivered with or as part of a Coretek product is expressly provided “as is” unless specifically provided by a license accompanying the software. If any Coretek product subject to this Limited Warranty fails during this time for reasons that are covered by our Limited Warranty, Coretek, at its option, will:
  • REPAIR the defect by means of hardware and/or software, using new or refurbished replacement parts; OR
  • REPLACE the product with a product that is new or which has been manufactured from new or serviceable used parts and is the functional equivalent to the original product; OR
  • REFUND the replacement value of the product.
If such product is defective, transportation charges for the return of the product to buyer within the USA will be paid by Coretek. For all other locations, the warranty excludes all costs of shipping, customs clearance and other related charges. Coretek will have a reasonable time to replace or make repairs to the product. In no event will Coretek be liable for any other costs associated with the replacement or repair of the product, including labor, installation or other costs incurred by buyer.

To request warranty service from Coretek, contact support@coretek.us during the coverage period or call us at 704-792-2221 (9am to 5pm EST), excluding holidays. Please provide: (1) your name, address, and telephone numbers; (2) model name and order number of the product; (3) an explanation of the problem.
A replacement product or part assume the remaining warranty of the original.

Coretek does not sell warranty extensions or accept old hardware products in exchange for new hardware products at reduced prices.

Warranty Limitations and Exclusions
These warranties replace all other warranties, expressed or implied including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Coretek makes no expressed warranties beyond those stated here. Coretek disclaims all other warranties, expressed or implied including, without limitation, implied warranties of merchantability and fitness for a particular purpose. Some jurisdictions do not allow the exclusion of implied warranties so this limitation may not apply. All expressed and implied warranties are limited in duration to the limited warranty period. No warranties apply after that period. Some jurisdictions do not allow limitations on how long an implied warranty lasts, so this limitation may not apply to you.

Limitations of Liability 
Coretek’s responsibility under this, or any other warranty, implied or expressed, is limited to repair, replacement or refund, as set forth above. These remedies are the sole and exclusive remedies for any breach of warranty. Coretek is not responsible for direct, special, incidental, or consequential damages resulting from any breach of warranty under another legal theory including, but not limited to, lost profits, downtime, goodwill, damage to or replacement of equipment and property, and any costs of recovering, reprogramming, or reproducing any program or data stored in or used with a system containing this Coretek product. Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations or exclusions may not apply to you.

Dispute Resolution
This limited warranty gives you specific legal rights, and you may also have other rights that vary from jurisdiction to jurisdiction. Any and all disputes arising under or related to this limited warranty shall be adjudicated in the United States. The forum shall be Concord, North Carolina, USA, and the applicable law shall be that of the state of North Carolina, USA.



Your use of Coretek software is on the terms of the license in effect for the software at the time of purchase. You will be asked to agree to the terms of the applicable license at the time that you install the software. Please be aware, however, that your purchase is subject to the particular license that accompanies the software and you must agree to the terms and conditions of that license when you install the software. That license may differ from the licenses you can review here. Be certain to read the applicable license carefully before you install the software. You may return software after rejecting the licensing terms, provided the software is not installed on a computer.
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HP All-in-One 3420 Pro 20" HD+ (1600x900) AIO Computer - Core i3 3.30GHz, 8GB RAM, 128GB SSD, WebCam, Win 10 Pro, USB Keyboard & Mouse