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The seller is away until Sep 01, 2025. If you buy this item, expect a delay in shipping.
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Microsoft MS-DOS 4.01 Operating System Version 5.25 Disks (SEALED)

US $89.95
ApproximatelyS$ 115.26
Was US $99.94 (10% off)What does this price mean?
Recent sales price provided by the seller
Condition:
Brand New
5 available
People want this. 13 people are watching this.
Shipping:
US $10.22 (approx S$ 13.10) USPS Ground Advantage®.
Located in: Bonney Lake, Washington, United States
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Delivery:
Estimated between Wed, 3 Sep and Sat, 6 Sep to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the shipping service selected, the seller's shipping history, and other factors. Delivery times may vary, especially during peak periods.
Returns:
No returns accepted.
Coverage:
Read item description or contact seller for details. See all detailsSee all details on coverage
(Not eligible for eBay purchase protection programmes)

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eBay item number:135552261377
Last updated on Aug 17, 2025 14:55:52 SGTView all revisionsView all revisions

Item specifics

Condition
Brand New: An item that has never been opened or removed from the manufacturer's sealing. Item is in ...
Brand
Microsoft
Type
Operating System
Format
5.25 in Floppy Disc
License Category
Standard
Model
Microsoft MS-DOS
For Operating Systems
Microsoft DOS
Number of Devices
1
UPC
Does not apply

Item description from the seller

About this seller

Dillon Electronics

100% positive feedback8.8K items sold

Joined Dec 2002
Usually responds within 24 hours
Our mission is to keep these ancient artifacts from ending up in a landfill. We think there is still great value in vintage electronics, and we look forward to providing the hardware & software to ...
See more

Detailed Seller Ratings

Average for the last 12 months
Accurate description
5.0
Reasonable shipping cost
4.9
Shipping speed
5.0
Communication
5.0

Seller feedback (2,815)

All ratings
Positive
Neutral
Negative
  • a***a (290)- Feedback left by buyer.
    Past month
    Verified purchase
    I have been fighting this thing for over a week trying to get it to work. I was questioning my soldering skills, chip orientation, the jumpers. What was I doing wrong?! I spent a few days just testing with a multimeter from point to point. Everything seemed fine. I broke down and bought a TL8866II Plus programmer to test all the chips. Everything tested fine except the 28C64B. It was bad! Don't use one of these without a chip tester because they obviously don't check them before sending.
    Reply from: dillon_electronics- Feedback replied by seller dillon_electronics.- Feedback replied by seller dillon_electronics.
    The chips are brand new pulled from factory tubes. Indeed we do not test brand new chips. If I write to an EEPROM and then erase it, it's not brand new anymore is it? You could have contacted us and requested that we test and send you another chip, which we would have no problem doing. I cant see any attempt made to contact us regarding the issue. That's ok, you should buy from another seller, or ask questions before making a purchase. Thanks
  • o***o (75)- Feedback left by buyer.
    Past month
    Verified purchase
    Great parts and good price for the quantity.
  • j***h (1760)- Feedback left by buyer.
    Past month
    Verified purchase
    Thanks. All Good.