3Com EtherLink III 3C509B-COMBO – The Ultimate Vintage ISA Network Card
Up for sale is the legendary 3Com EtherLink III (3C509B) in the highly desirable COMBO version. Widely regarded as the best ISA network card ever made, it offers unmatched performance and stability for vintage systems.
The "Holy Grail" for PC/XT & Retro Enthusiasts
While originally a 16-bit card, this specific model is famous in the retro community for its 8-bit compatibility.
PC/XT & Clones Support: Using community-developed modified drivers/software, this card can run in 8-bit ISA slots (IBM PC 5150, XT 5160, clones, etc.).
The Easiest Way to Get Online: It is the most robust way to bring high-speed 10Mbps networking to an original 8088/8086 machine.
Key Features:
Triple Interface (COMBO): Maximum flexibility with three connection types:
Jumperless Configuration: No fiddly jumpers! Entirely software-configurable for IRQ and I/O settings via the classic 3Com 3C50x.EXE utility.
Parallel Tasking Architecture: 3Com's patented tech that reduces CPU overhead—crucial for older, slower processors.
Boot ROM Socket: Ready for your XT-IDE or custom networking ROMs.
Condition & Quality:
Made in the USA: High-quality vintage manufacturing.
Tested & Working: This card is in excellent physical condition and has been preserved with care.
Legendary Driver Support: Works with everything from DOS (Packet Drivers), Windows 3.11, WfWG, Windows 95/98, to OS/2 and NetWare.
Package Includes: * 1x 3Com EtherLink III 3C509B-COMBO ISA Card.
Note: For 8-bit XT operation, please ensure you use the modified "3C509-XT" packet drivers available in the vintage computing community archives.
Shipping
To the countries: France, Italy, Spain, Portugal, Belgium, Netherlands, Luxembourg the card will be send to the nearest pickup point or inPost/Mondial Relay locker. - shipping 10 EUR
Poland inPost - shipping 5 EUR
15 EUR – other coutries by Global Express
