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Apple-branded "Fast Ethernet 10/100BaseT card" (PCI) "SA0025"


Well-known member
Does anyone know which Apple driver/extension this card uses? The SA0025 is apparently just a re-badged ZNYX NETBLASTER ZX345. Both boards are silk-screned with "SA0025" on the PCB, and appear identical, besides the sticker on the 21140 chip itself.

For the record, the Apple 10/100 PCI card is actually just a DEC 21140-based Ethernet card:

The following is taken verbatim from a 1998 Apple document, labeled "033-1014-A",

Update: About the Optional 10/100Base-T Ethernet Card

Some Macintosh computers come with an optional 10/100 Base-T Ethernet card installed. This
update provides details about the card that are not covered in the computer’s manual.

10/100Base-T Ethernet Card Specifications

  • Open Transport: Mac OS 7.5.2 or later, AppleShare, AppleTalk, NetWare for Macintosh, TCP/IP
  • Connector: RJ-45 (for 10Base-T and 100Base-T)
  • Media, 10Base-T: Cat 3, 4, or 5 UTP on 2 pairs up to 100 meters (m)
  • Media, 100Base-T: Cat 5 UTP on 2 pairs up to 100 m
  • Bus interface: PCI revision 2.0 and 2.1, share interrupt A
  • Channel speeds: IEEE Auto Negotiation of 10Base-T and 100Base-T
  • Communications: IEEE 802.3i 10Base-T; IEEE 802.3u 100Base-T
  • Controllers: DECchip 21140, 32-bit internal processor per channel
  • Power: 1.2 amperes (A) @ 5 volts ( V ) typical
Here's a photo of the Apple-branded card:
...and here's the original, ZNYX-branded card:


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Well-known member
I AltaVistaed the card, and it apparently uses the "Apple Enet" extension ... but it has to be the correct Apple Enet extension from the Beige G3 or later. I suspect so long as it is installed while you install the OS, anything OS 8 or later will likely install the correct driver for the card.


Well-known member
I can confirm that the "Apple Enet" extension, version 2.4.2, works properly with this Apple-branded card, which is actually a re-badged ZNYX NetBlaster ZX345. I've attached a self-extracting, macbinary-encoded archive, containing just the necessary Extension, to this post.

According to a nearly 21-year-old MacInTouch post, version 2.4.1 of this extension had a memory leak. The Apple ENET Extension version 2.3 may also work with this card, but I haven't yet validated it.

Apple Enet extension version 2.4.2 originally was distributed as part of an image, published on Apple's FTP site, Apple_Ethernet_Update_2.0.smi.bin


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